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 ('81f9e1d9984ddcc55952380c59e36a9a', -1, 1568907455, 1568907455, '23afbf96', 24, 0, 0)

Line : 187
File : sessions.php