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 ('513c75789b9e8daff4d3a4cd161b4883', -1, 1566747895, 1566747895, '12ce0fd7', 4, 0, 0)

Line : 187
File : sessions.php