'Table' object has no attribute 'decode' error after upgrading

[rich9474]

• Poetry version: 1.5.1
• Python version: 3.9.13
• OS version and name: Rocky Linux 8.7
• pyproject.toml: NA

• [x] I am on the latest stable Poetry version, installed using a recommended method.
• [x] I have searched the issues of this repo and believe that this is not a duplicate.
• [x] I have consulted the FAQ and blog for any relevant entries or release notes.
• [ ] If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

After installing v1.5.1 using the official installer method: curl -sSL https://install.python-poetry.org | python3.9 - I could no longer run any poetry commands like poetry config --list. I would just get the error:

 master(+255/-192)* 14s ± poetry config --list

'Table' object has no attribute 'decode'

After purging all poetry related files from the system and re-installing it cleared the error. I suspect the culprit was incompatible settings in one of:

/data/home/rhall/.config/pypoetry
/data/home/rhall/.config/pypoetry/config.toml

Sorry, I don't have the contents of the files and I didn't run with -vvv as I only came to report the issue after fixing it.

I was upgrading from 1.2. It seems that there was no conversion or validation of the config files on upgrading.

[dimbleby]

unactionable, might as well close it

[gouzmi]

In my case the file .config/pypoetry/config.toml was misformatted. Try to fix it or leave it empty.

Example of one:

[virtualenvs]
in-project = true

[github-actions[bot]]

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