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 ('2a8a986ae2b0cfa51084b922f4b25376', -1, 1519360683, 1519360683, '36c49118', 0, 0, 0)

Line : 187
File : sessions.php