What, you did not write those 12/24 words? Improper way to handle crytocurrencies.
This seems to be you Encrypted ldb file Brave has wiped my metamask wallet saying it was corrupted and now I can not access the certain adress that has all my tokens!
@Krustydj I would suggest trying to create an issue on metamask support as it is more so related to metamask wallet rather than brave wallet. https://scribe.rip/@misunderstood.ashley/back-up-and-recover-your-metamask-wallet-96414b2a9d14 (the tutorial seems for an app and not for the extension)