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 ('960d37dfd7e6eed48f895ed55caadff3', -1, 1713998182, 1713998182, '0393cd9a', 0, 0, 0)

Line : 187
File : sessions.php