When I checked my database, I saw errors like this on several tables within the database: 52 clients are using or haven’t closed the table properly. This had resulted in the website not being able to connect to the database and MySQL process had been killed.
To fix this, I restarted the MySQL server and repaired database from the cPanel.
I would like to know what could have been the reason behind these errors on the tables. These errors were present in these tables: wp_actionscheduler_actions, wp_actionscheduler_claims, wp_actionscheduler_logs, wp_termmeta along with several other tables related to plugins.