UI error when i execute bench update

when i try to use bench mysql i get this err
ERROR 1045 (28000): Access denied for user ‘1bd3e0294da19198’@‘localhost’ (using password: YES)
my mariadb status is active. my bench is running but in UI i get that error.
give me idea to clear it

when i get execute this command sudo systemctl status mariadb i get this error systemctl daemon-reload

try this command
sudo mysqld --tc-heuristic-recover=ROLLBACK
and then
service mysql start

This happens generally happens when the credentials are changed or rights are revoked… can you do mysql -u root -p and then check whats going on in the db ?

May be you can check the password with siteconfig file or may be you can try to see the user privileges for the given db ?