phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ff6a78c63721fec129d6138c71417b9a', -1, 1749616843, 1749616843, 'd849d81e', 30, 0, 0)

Line : 190
File : sessions.php