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 ('bfb6bedd91ba2f2abd9f9f46490d0e08', -1, 1432354447, 1432354447, '36cc64e8', 12, 0, 0)

Line : 187
File : sessions.php