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 ('6b8f9c4729ba0b2a937ca8da8b7fe020', -1, 1547681295, 1547681295, '03502021', 869, 0, 0)

Line : 196
File : sessions.php