phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './messageboard/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 ('ee18e17e520d9c949ce5a457556ad35b', -1, 1414762500, 1414762500, '36e3aba3', 1, 0, 0)

Line : 187
File : sessions.php