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 ('bd478f4b7ca5e3e7ba6c21fe0819e3b1', -1, 1566427142, 1566427142, '23adeaed', 3, 0, 0)

Line : 187
File : sessions.php