phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './ultimate/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('23dcfd0d1743006731b11b8c5f603401', -1, 1555869748, 1555869748, '3437bae1', -1, 0, 0)

Line : 187
File : sessions.php