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 ('82b1974f6492edf9756105b06c54e21c', -1, 1422808705, 1422808705, '369f9a65', -1, 0, 0)

Line : 187
File : sessions.php