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 ('e722d9d18005901ec1aa2017222bab9d', -1, 1429389991, 1429389991, '369fbcb3', -1, 0, 0)

Line : 187
File : sessions.php