In the last update every time that I format a document (every time I save a file) this notification appears and I can't do anything about it, my settings don't have any prettier configurations and when I press "Migrate Config" creates a file but does nothing to fix the problem.
I'd like this error to be fixed, or at least the notification to just appear once, not every time I format a file, the notification doesn't even disappear itself after some time!, I have to manually press X

I have the same issue, but i have my prettier config in a dedicated prettier.config.js file.
Same here, tried reinstalling the extension but still showing up.
You have a legacy prettier setting in your project or global config. See: https://github.com/prettier/prettier-vscode#error-messages
I will add logging to include more information about where the setting was found.
Version 3.2.1 adds logging and a button on the message to show the logs. The logs will tell you what setting was found and where it was found.
I also changed the dialogs to warnings instead of errors.
It needs a way to disable this notification, cause in many cases it may be useless. It's more than enough to show it one time. If user wants to keep those settings - then let it be. For example if someone uses synced config with different versions of this extension (e.g. v2), those legacy staff become needed.
Same Error here. After removing "prettier.singleQuote" line form setting file and puting it in .prettierrc config file these setting ist ignored. Where should i put the .prettierrc file?
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Most helpful comment
Version 3.2.1 adds logging and a button on the message to show the logs. The logs will tell you what setting was found and where it was found.
I also changed the dialogs to warnings instead of errors.