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 ('b7258d38a35d8cc16ba0c4fe0a538d16', -1, 1503469224, 1503469224, '36c6231a', 6, 0, 0)

Line : 189
File : sessions.php