phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forumcr/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 ('ad07abf6f4ad535ef82623a1b2fa0c23', -1, 1427967639, 1427967639, '3691d182', 30, 0, 0)

Line : 187
File : sessions.php