phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c5c68e0a2fdc63cbf9070ffaa9a204cb', -1, 1524145426, 1524145426, '36c67a46', -4, 0, 0)

Line : 211
File : sessions.php