phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 144 Table './ADL/phpbb_sessions' is marked as crashed and last (automatic?) repair failed

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('55273369d5ca90e4d78090c3c20f6fa4', -1, 1545019307, 1545019307, '36dd935d', 0, 0, 0)

Line : 187
File : sessions.php