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 ('42721dfcbe9c654a90003d0850263c19', -1, 1506216494, 1506216494, '36510849', 2, 0, 0)

Line : 172
File : sessions.php