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 ('f3dd0d9428a0fa5afb4d576886573bbd', -1, 1561472092, 1561472092, '36e39da3', 20, 0, 0)

Line : 187
File : sessions.php