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 ('75f1788f58bd1e4df9b66a19e9d9fd3e', -1, 1511367895, 1511367895, '36c40283', 0, 0, 0)

Line : 211
File : sessions.php