phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 144 Table './phpbb/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 ('c2d80732ac256a140e5ba2a0c473378f', -1, 1537930858, 1537930858, '36c617fb', 0, 0, 0)

Line : 189
File : sessions.php