phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './myforum/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 ('1395bf9a7c4493b7f16ca423ac5eb796', -1, 1794256709, 1794256709, 'd849d979', -4, 0, 0)

Line : 187
File : sessions.php