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 ('1a19d71e1a1c824b62654c9eaff0c12d', -1, 1432981086, 1432981086, '36a1bbfa', 2, 0, 0)

Line : 187
File : sessions.php