A couple of days ago, kmail stopped working.
When I try to launch akonadi_server, I get those error messages:
Failed to connect to database: Can't connect to local server through socket '/run/user/1000/akonadi/mysql.socket' (111) QMYSQL: Unable to connect
Xapian error DatabaseOpeningError: Couldn't detect type of database.
I need some guidance find relevant information to resolve the issue.