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 ('df0c750192f661d5d1ec0995f6e6b9fa', -1, 1438590941, 1438590941, 'b95de50a', -4, 0, 0)

Line : 187
File : sessions.php