I have a question about "NFT Bulk Minting Tool"

An error occurs when you enter the command in [chianft submit-spend-bundles -m 10 output.pkl ]<- powershell.

chia is the folder I made and chia-nft-minting-tool is clone in chia-blockchain. I’m not sure if this is the right way.

Error ↓

Traceback (most recent call last):

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\Scripts\[chianft-script.py](https://chianft-script.py/)", line 33, in <module>

sys.exit(load_entry_point('chianft', 'console_scripts', 'chianft')())

File "c:\chia\chia-blockchain\chia-nft-minting-tool\chianft\cmds\[cli.py](https://cli.py/)", line 242, in main

[asyncio.run](https://asyncio.run/)(cli()) # pylint: disable=no-value-for-parameter

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\lib\site-packages\click\[core.py](https://core.py/)", line 1130, in __call__

return self.main(*args, **kwargs)

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\lib\site-packages\click\[core.py](https://core.py/)", line 1055, in main

rv = self.invoke(ctx)

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\lib\site-packages\click\[core.py](https://core.py/)", line 1657, in invoke

return _process_result(sub_ctx.command.invoke(sub_ctx))

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\lib\site-packages\click\[core.py](https://core.py/)", line 1404, in invoke

return ctx.invoke(self.callback, **ctx.params)

File "C:\chia\chia-blockchain\chia-nft-minting-tool\venv\lib\site-packages\click\[core.py](https://core.py/)", line 760, in invoke

return __callback(*args, **kwargs)

File "c:\chia\chia-blockchain\chia-nft-minting-tool\chianft\cmds\[cli.py](https://cli.py/)", line 237, in submit_spend_bundles_cmd

asyncio.get_event_loop().run_until_complete(do_command())

File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\asyncio\base_events.py", line 642, in run_until_complete

return future.result()

File "c:\chia\chia-blockchain\chia-nft-minting-tool\chianft\cmds\[cli.py](https://cli.py/)", line 227, in do_command

await minter.submit_spend_bundles(

File "c:\chia\chia-blockchain\chia-nft-minting-tool\chianft\util\[mint.py](https://mint.py/)", line 393, in submit_spend_bundles

funding_coin, sb_index = await self.get_unspent_spend_bundle(spend_bundles)

File "c:\chia\chia-blockchain\chia-nft-minting-tool\chianft\util\[mint.py](https://mint.py/)", line 343, in get_unspent_spend_bundle

assert isinstance(coin_record, CoinRecord)

AssertionError

↑ Please look at this error and help me. I’m a beginner.