phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpBB/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 ('384bed8dae60f08090437c00d210d149', -1, 1464267083, 1464267083, '3651575e', 5, 0, 0)

Line : 187
File : sessions.php