phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('c4299924ffd5bd7fe29a0a4f6fe91422', -1, 1422830398, 1422830398, '3653e00f', 3, 0, 0)

Line : 187
File : sessions.php