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 ('c66ce1f1e6dca342936a58c7183fcf59', -1, 1433002947, 1433002947, '17162c00', 13, 0, 0)

Line : 187
File : sessions.php