SSL certificate verify failed on remote harvester

I am getting this in my error logs on my remote harvester:

2021-05-03T07:39:29.430 harvester harvester               : INFO     Reconnecting to peer {'host': 'xxx', 'port': 8447}
2021-05-03T07:39:29.439 harvester harvester_server        : INFO     Cannot connect to host xxx ssl:True [SSLCertVerificationError: (1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate signature failure (_ssl.c:1123)')]

When I check certificates it shows:

dpkg -l | grep cert

ii  ca-certificates                      20210119~20.04.1                   all          Common CA certificates
ii  dirmngr                              2.2.19-3ubuntu2.1                  amd64        GNU privacy guard - network certificate management service
ii  python3-certifi                      2019.11.28-1                       all          root certificates for validating SSL certs and verifying TLS hosts (python3)

Date and time are correct.

What could be the issue here? Do i need to reinstall python?

For remote harvesters you need to copy the keys from .chia of the main machine/farmer. See this guide.

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