phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('db9e9e44651a095aa15e1fe06dfe2e86', -1, 1714517202, 1714517202, '12761efd', 0, 0, 0)

Line : 187
File : sessions.php