Farming error log

Hi,

I extracted the following errors from the farming log.

Anything I should be worried about?

2022-02-07T17:54:27.341 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T17:54:27.342 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x480a7b353c5322db049ecd780d9ff788ade2d638e7ce487e3bdc2d22e0198306',
2022-02-07T17:55:49.217 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T17:55:49.218 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x5ca6c807779eb4e5d0ffa4da71709775d23f93702da91c22be6d773af8ff4649',
2022-02-07T17:58:19.071 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T17:58:19.071 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x261fdfc697a7f821f7590049f360b8b13f35e9d96716c23b7b1598697ddc1eb5',
2022-02-07T17:59:54.022 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T17:59:54.022 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x53599d5bf79dce6d3b541553ca91004c80a66cf3adba329fea08d29b5a72d04e',
2022-02-07T18:00:43.477 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:00:43.478 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x59af8c85b99a0c62035c532593cf5265912fd7fb728a79c96c6011a7bbd10a81',
2022-02-07T18:01:48.409 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:01:48.409 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xa5c3acc46b7fe08f00f3a7d498d8cca1a36be18e07ff8843818ff8b1cecdf953',
2022-02-07T18:01:48.987 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:01:48.987 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x62815f8eed2e709dfd6e93fcd32da8ab985d6631fc1102c5a3b620fb7c67c89d',
2022-02-07T18:02:06.626 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:02:06.626 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x6e252f6b2fb572209fcce4c63b18d9ee37ac16f654751410592979ccbc8e95bf',
2022-02-07T18:02:45.260 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:02:45.260 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xa6c635eca881c807161d08c471ab78d3063e0f592156b1c1b3f23520662968da',
2022-02-07T18:03:02.022 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T18:03:02.022 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xd926397572dfc66afd8bba42d8afa3403da79d734fd4bcec626003f617be56e4',

Just asking how is your hard disk space??

ERROR Invalid proof of space / New challenge is not challenge - Chia Pools - Chia Forum

drhicom, the plot disks are of course full (of plots) The OS disk has 100 GB free

Don’t know that error, never saw it on my system. But it’s an error so yes I think you should worry, or at least investigate further.

When did it start (or did you notice), is it continuous or just now and then? Any other errors/warnings?
If the farmer does not like the challenges it’s being fed by the full-node not much farming will happen I guess…

Maybe there are some additional errors in your log? For now it’s just not enough to understand the issue.

Look for additional errors especially during farmer startup. Currently you are NOT farming on some or all plots.

Indeed it seems I am not farming on all plots. Here is the first series of messages at farmer startup:

chia farm summary
Farming status: Farming
Total chia farmed: 0.0
User transaction fees: 0.0
Block rewards: 0.0
Last height farmed: 0
Local Harvester
   1605 plots of size: 158.865 TiB
Plot count for all harvesters: 1605
Total size of plots: 158.865 TiB
Estimated network space: 31.780 EiB
Expected time to win: 1 month and 2 weeks
Note: log into your key using 'chia wallet show' to see rewards for each key

free memory
              total        used        free      shared  buff/cache   available
Mem:           31Gi       7.3Gi       598Mi        50Mi        23Gi        23Gi
Swap:         2.0Gi       172Mi       1.8Gi
disk space
Filesystem       1K-blocks        Used  Available Use% Mounted on
tmpfs              3278240        2744    3275496   1% /run
/dev/nvme0n1p6   194289300    66215292  118175272  36% /
tmpfs             16391180        5336   16385844   1% /dev/shm
tmpfs                 5120           4       5116   1% /run/lock
tmpfs                 4096           0       4096   0% /sys/fs/cgroup
/dev/nvme0n1p3      524272        5340     518932   2% /boot/efi
tmpfs              3278236         928    3277308   1% /run/user/1000
/dev/nvme1n1     999716252   325902628  673813624  33% /media/marco/nvme1n1
/dev/sdr       11718885372 11690184156   28701216 100% /media/marco/12TB_TOSHIBA
/dev/sdab1     11718837248 11691596800   27240448 100% /media/marco/My Book
/dev/sdaa1     11718837248 11690759168   28078080 100% /media/marco/My Book1
/dev/sdx1      11718837248 11691525120   27312128 100% /media/marco/My Book2
/dev/sdw1      11718837248 11372851200  345986048  98% /media/marco/My Book3
/dev/sdv2       7813894140  7759496976   54397164 100% /media/marco/Seagate Backup Plus Drive
/dev/sdt2       7813894140  7758334988   55559152 100% /media/marco/SEAGATE_8TB
/dev/sds1      11718837248 10533667840 1185169408  90% /media/marco/My Book4
/dev/sdp1      11718837248 11690788864   28048384 100% /media/marco/My Book5
/dev/sdh2       7813894140  7758964276   54929864 100% /media/marco/Seagate Backup Plus Drive1
/dev/sdd        3844641608  3613738904   35535392 100% /media/marco/PLOTS
/dev/sdg2       4883638268  4782285776  101352492  98% /media/marco/Seagate Expansion Drive2
/dev/sde2       4883638268  4782451460  101186808  98% /media/marco/Seagate Expansion Drive
/dev/sdf2       4883638268  4783238020  100400248  98% /media/marco/Seagate Expansion Drive1
/dev/sdj2       4883638268  4883638268          0 100% /media/marco/Seagate Expansion Drive4
/dev/sdk2       4883638268  4782384532  101253736  98% /media/marco/Seagate Expansion Drive5
/dev/sdi2       4883638268  4782597552  101040716  98% /media/marco/Seagate Expansion Drive3
/dev/sdl2       3906885628  3826645180   80240448  98% /media/marco/Seagate Backup Plus Drive2
/dev/sdm2       3906885628  3826451332   80434296  98% /media/marco/Seagate Backup Plus Drive3
/dev/sdo2       4883638268  4783046420  100591848  98% /media/marco/Seagate Expansion Drive7
/dev/sdn2       4883638268  4782589004  101049264  98% /media/marco/Seagate Expansion Drive6
/dev/sdq2       4883638268  4782606720  101031548  98% /media/marco/Seagate Expansion Drive8
/dev/sdu2       4883638268  4782951856  100686412  98% /media/marco/Seagate Expansion Drive9
/dev/sdy2       7813894140  7758592684   55301456 100% /media/marco/Seagate Backup Plus Drive4
/dev/sdz2       3906885628  3826334492   80551136  98% /media/marco/Seagate Backup Plus Drive5
chia plot directories
Directories where plots are being searched for:
Note that subdirectories must be added manually
Add with 'chia plots add -d [dir]' and remove with 'chia plots remove -d [dir]' Scan and check plots with 'chia plots check'

/media/marco/sda
/media/marco/sdb
/media/marco/sdd
/media/marco/nvme1n1/Q3
/media/marco/nvme1n1/Q2
/media/marco/nvme1n1/Q1
/media/marco/12TB_TOSHIBA/MARRON_NEWT_NFT_MADMAX_PLOTS
/media/marco/My Book5/MADMAX_POOL_PLOTS
/media/marco/My Book5/CHIA_POOL_PLOTS
/media/marco/My Book4/MADMAX_PLOTS
/media/marco/My Book4/PLOTS
/media/marco/My Book3/PLOTS
/media/marco/My Book2/PLOTS
/media/marco/My Book1/PLOTS
/media/marco/My Book/PLOTS
/media/marco/SEAGATE_8TB/CRIMSON_GAYAL_NFT_PLOTS
/media/marco/SEAGATE_8TB/MARRON_NEWT_NFT_MADMAX_PLOTS
/media/marco/SEAGATE_8TB/VIOLET_WALRUS_NFT_PLOTS
/media/marco/Seagate Backup Plus Drive1/PLOTS
/media/marco/Seagate Backup Plus Drive2/PLOTS
/media/marco/Seagate Backup Plus Drive3/PLOTS
/media/marco/Seagate Backup Plus Drive/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS
/media/marco/Seagate Backup Plus Drive4/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS
/media/marco/Seagate Backup Plus Drive5/PLOTS
/media/marco/Seagate Expansion Drive/PLOTS
/media/marco/Seagate Expansion Drive1/PLOTS
/media/marco/Seagate Expansion Drive2/PLOTS
/media/marco/Seagate Expansion Drive3/PLOTS
/media/marco/Seagate Expansion Drive4/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS
/media/marco/Seagate Expansion Drive5/PLOTS
/media/marco/Seagate Expansion Drive6/PLOTS
/media/marco/Seagate Expansion Drive7/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS
/media/marco/Seagate Expansion Drive8/PLOTS
/media/marco/Seagate Expansion Drive9/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS
/run/user/1000/gvfs/smb-share:server=nasc90186.local,share=public/SCANS/TEST
cpu usage
Linux 5.11.0-49-generic (marco-System-Product-Name) 	07/02/22 	_x86_64_	(12 CPU)

11:03:02     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
11:03:02     all    1.06    0.00    0.18    2.49    0.00    0.00    0.00    0.00    0.00   96.26
chia error log
2022-02-07T10:50:10.217 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:50:10.217 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x34691b17c7b4ff26fb2783549e8a0b5c2e5bc66e94a2bfd1f823a93b8dbcec7e',
2022-02-07T10:55:07.280 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:55:07.281 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xe6901632c305d90c79ff8fd8b156e7ce62d6fe5259b225d133b47bbbd1b64556',
2022-02-07T10:55:14.668 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:55:14.668 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xc28854281c6a83f42cbd43471a706a72ebb46b848899cc2c5af5aadc9debee63',
2022-02-07T10:57:09.309 harvester chia.plotting.plot_tools: ERROR    Failed to open file /media/marco/Seagate Expansion Drive3/PLOTS/plot-k32-2021-07-05-09-38-7123ec86686dfb599cb6f70aea8904eae40f9157ae9a85718381b7a4cbbaaa63.plot. Invalid C2 table size Traceback (most recent call last):
2022-02-07T10:57:09.315 harvester chia.plotting.plot_tools: ERROR    Failed to open file /media/marco/Seagate Expansion Drive4/MAROON_NEWT_NFT_CHIA_PLOTTER_PLOTS/plot-k32-2021-08-28-10-16-38896647376f448d31226a29fb1614d966dd055eada8defc4891863f8f00293b.plot. badbit or failbit after reading size 4 at position 107534568813 Traceback (most recent call last):
2022-02-07T10:57:37.416 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:57:37.416 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x8de435a90c4545fe78c179624908bfabbcb4ed494ef8a4ac0eaa2ea6d6f6f066',
2022-02-07T10:58:03.845 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:58:03.845 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x59896989855960de3e6a185ded8440a16e25fcc5c07445d8cf793625ad72a9a5',
2022-02-07T10:58:43.113 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:58:43.113 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x7a57789742ee09a09c6c43a96f9cc56c389d862da87288e53136fd0fb2a1069e',
2022-02-07T10:59:18.154 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T10:59:18.155 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0x10a631e805544977824b55c7bf0034f2a46b6648ca5842eebdf126b0960e7a90',
2022-02-07T11:02:17.189 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T11:02:17.189 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xad5ebe2299d55f0294ead90710c99aeee53cac37c3bcfe139f5fdcd513c061a4',
2022-02-07T11:02:17.190 farmer chia.types.blockchain_format.proof_of_space: ERROR    New challenge is not challenge
2022-02-07T11:02:17.190 farmer chia.farmer.farmer         : ERROR    Invalid proof of space {'challenge': '0xad5ebe2299d55f0294ead90710c99aeee53cac37c3bcfe139f5fdcd513c061a4',
chia warn log
2022-02-07T10:48:41.104 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T10:50:51.347 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T10:50:51.348 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T10:50:51.348 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T10:50:57.963 full_node full_node_server        : WARNING  Cannot write to closing transport 92.238.54.161
2022-02-07T10:52:55.987 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T10:52:55.987 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T10:52:55.988 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T10:55:03.431 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T10:55:03.431 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T10:55:03.431 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T10:57:09.178 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T10:57:09.178 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T10:57:09.178 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T10:59:17.046 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T10:59:17.047 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T10:59:17.047 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.
chia info log

chia harvester farm ip connections
 'proof': '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',
chia plots found log

chia proofs found log

syslog
Feb  7 10:59:30 marco-System-Product-Name systemd[1]: cron.service: Succeeded.
Feb  7 10:59:30 marco-System-Product-Name systemd[1]: Stopped Regular background program processing daemon.
Feb  7 10:59:30 marco-System-Product-Name systemd[1]: Started Regular background program processing daemon.
Feb  7 10:59:30 marco-System-Product-Name cron[455092]: (CRON) INFO (pidfile fd = 3)
Feb  7 10:59:30 marco-System-Product-Name cron[455092]: (CRON) INFO (Skipping @reboot jobs -- not system startup)
Feb  7 11:00:01 marco-System-Product-Name CRON[455130]: (marco) CMD (date > /var/www/html/chia/detail.log && grep -i -H "time" /home/marco/Desktop/CHIA/chia-logs/*.log > /var/www/html/chia/detail.log)
Feb  7 11:00:01 marco-System-Product-Name CRON[455131]: (marco) CMD (cd /home/marco/Desktop/chia-blockchain && . ./activate ./plotbot.sh)
Feb  7 11:00:01 marco-System-Product-Name CRON[455132]: (marco) CMD (date > /var/www/html/chia/plot.log && grep -i -H "Total time" /home/marco/Desktop/CHIA/chia-logs/*.log > /var/www/html/chia/plot.log)
Feb  7 11:00:01 marco-System-Product-Name CRON[455133]: (marco) CMD (date > /var/www/html/chia/phase.log && grep -i -H "time for" /home/marco/Desktop/CHIA/chia-logs/*.log > /var/www/html/chia/phase.log)
Feb  7 11:00:47 marco-System-Product-Name crontab[455188]: (marco) BEGIN EDIT (marco)
Feb  7 11:02:14 marco-System-Product-Name crontab[455188]: (marco) REPLACE (marco)
Feb  7 11:02:14 marco-System-Product-Name crontab[455188]: (marco) END EDIT (marco)
Feb  7 11:02:16 marco-System-Product-Name budgie-wm.desktop[2033]: Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x2603ada
Feb  7 11:02:19 marco-System-Product-Name systemd[1]: Stopping Regular background program processing daemon...
Feb  7 11:02:19 marco-System-Product-Name systemd[1]: cron.service: Succeeded.
Feb  7 11:02:19 marco-System-Product-Name systemd[1]: Stopped Regular background program processing daemon.
Feb  7 11:02:19 marco-System-Product-Name systemd[1]: Started Regular background program processing daemon.
Feb  7 11:02:19 marco-System-Product-Name cron[455438]: (CRON) INFO (pidfile fd = 3)
Feb  7 11:02:19 marco-System-Product-Name cron[455438]: (CRON) INFO (Skipping @reboot jobs -- not system startup)
Feb  7 11:03:01 marco-System-Product-Name CRON[455551]: (marco) CMD (cd /home/marco/Desktop/chia-blockchain && . ./activate && ./plotbot.sh)

Local Harvester
   1605 plots of size: 158.865 TiB
Plot count for all harvesters: 1605
Total size of plots: 158.865 TiB

How many plots do you think should be there? How many missing?

2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sda does not exist.
2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdb does not exist.
2022-02-07T11:01:22.694 harvester chia.plotting.plot_tools: WARNING  Directory: /media/marco/sdd does not exist.

Well, those directories don’t exist. There are no mountpoints in the output of df -h so not suprising.
You can use lsblk to see if you have some more disks that are not being mounted.

I wonder how you mount your disks in /etc/fstab? Do you do this by /dev/sd… or by /dev/disk/by-uuid?
Between (re)boots a disk/partition may be assigned a different driveletter. So mounting by /dev/sd… can cause a lot of confusion. You think for instance you have mounted a WD My Book on /media/marco/My Book x but it could just a well be the Toshiba 12TB or another disk. Using subdirectories on the partitions to be mounted is even trickier.
Better is to use the uuid (unique identifier for a partitioned/formatted disk), then your mounted partitions (and subdirectories on those) are consistent between (re)boots.

Thanx for the input xredr59.

The media/marco/sdx problem has since been resolved

The number of plots indicated at the beginning is correct (1605 plots of size: 158.865 TiB).

My currently unsolved problem is on the farming pool server display where I only see 50-60 TiB

So not all your 1605 plots are generating partials for this pooled Plot NFT.
OG (old style…) plots are not poolable at all, do you have those?
And how many Plot NFT’s did you generate and made plots for?
If more than one, each plot NFT is separate even with the same (Space) Pool used, so maybe there is more than one status page to watch from Space Pool…

I replaced all my old style plots with new style ones for a single NFT. 28 others are indeed made for two other NFTs (to test other pools) but 1577 plots should be farmed by this single NFT.

What exactly does the error “Invalid proof of space” mean?

Don’t know, never saw it myself and there is not much to be found on it on this forum or elsewhere.
Does not look good though, if the farmer receives (what it considers to be) an invalid challenge there is not a valid proof of space (attempt) I would guess. So also less partials to send to Space Pool, who can only interpret this as less space (TiB’s)

Some more questions, what version are you running and what number of Plots is reported in the Pool section of the GUI for your plot NFT’s?
How about your system in general, CPU, memory, OS (and database) on SSD or HDD?

Start running chia plots check on folders with plots and i would start with Seagate Expansion Drive3 & 4 as per log there may be some issues there with some plots. I would run plots check to do a quick check on integrity and to verify you have keys for all your plots.

Is your Chia up to date? What is the plotbot.sh script doing in CRON?

xkredr59, I am running the latest chia-blockhain downloaded on 7 February 2022

GUI indicates 158.865 TiB

CPU: Ryzen 5 3600XT
RAM: 32 GB
Ubuntu 20.04 on SSD

dcrech, plotbot.sh simply sends me an email every 6 hours with the logs and reports I pasted above.

Will run plot checks on the drives you suggested. Indeed I should do that systematically after each series of plots

That should be plenty resources;-)

Can you check the Pool section of the GUI for the number of plots recognized by the Plot NFT.
Like this
afbeelding

Or are you running on Ubuntu Server without GUI? Then there should be a CLI command that outputs this (I guess…).

Hi xkredr59, here’s a screenshot of the pool section (taken on 10 February)

Thanks.
So the Plot NFT recognizes all 1578 plots but Points Found in last 24 Hours is only 5542 comparable to a 55TiB farm working in good order (also reported by Space Pool dashboard).

Most likely the farmer/harvester are doing what they should do, but the issue is the farmer is not getting all or partially invalid challenges from the full-node.
How is your network setup? wired, wireless lan, 4g?

Have you considered installing something like farmr to monitor your setup 24/7?

I assume you stopped, rebooted the system and restarted chia more than once…

The harvester PC is wired to a 10GB LAN with fast internet.

Could it be I have a thousand invalid plots? But in that case wouldn’t I be getting a thousand error messages?

If I am getting partially invalid challenges from the full-node, does that mean my installation is somehow wrong or is it necessarilly a network issue?

The harvester has now been running nonstop since 7 February when I changed to a faster PC

Will try farmr

No, I don’t think there is anything wrong with the plots.
That would give other errors/warnings but could not explain the ‘invalid challenge’ errors.
I think a reboot of your system and chia client is in order.
You have all or mostly USB connected drives if I’m right. Never got an answer on my question how you mount those. Can be relevant if you reboot the system.
And always stop chia first (File - Quit in GUI) and give it a minute or so to really close all instances.