phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './socal_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 ('119b6c4d0042e1acf6d1a1902c6fb3d0', -1, 1438590983, 1438590983, 'b95de50a', -1, 0, 0)

Line : 187
File : sessions.php