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 ('382c7261bf8f5b33b1d51c45b9adbc8c', -1, 1485139400, 1485139400, '3693f49d', 2, 0, 0)

Line : 187
File : sessions.php