There was already a similar topic, but I have a different problem with this error:
I used Monero wallet on Windows and had no problems.
Turned off the computer, walked away, came back and gives this error. I didn't make any changes to the files. Didn't update wallet. Used VPN while working with Monero wallet. Without tor and i2p.
I don't have a 25 word phrase. There are no required keys. There is only a password and the .keys file itself
I reinstalled the client, tried to run my wallet file on another windows. Nothing helped. Please help me to solve this problem