phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './america_alabama/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 ('58d4b87f86005ce7909f652f6a690e8f', -1, 1432923108, 1432923108, '36574d0f', 1, 0, 0)

Line : 187
File : sessions.php