phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('3dda37b5c6cfcb558c1558c40c69c135', -1, 1496022677, 1496022677, '6b166610', -1, 0, 0)

Line : 187
File : sessions.php