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 ('6a154a30536b1f6d1aaa6cc051ac6ea5', -1, 1500634853, 1500634853, '36a28bd9', 14, 0, 0)

Line : 187
File : sessions.php