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 ('8bf7fd771e8c81e2a7cb422a9b371691', -1, 1547681325, 1547681325, '03502021', -4, 0, 0)

Line : 196
File : sessions.php