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) VALUES ('8a2aa2b6fa11d446dc01fd03b652f4aa', -1, 1714415867, 1714415867, '12778348', 20, 0)

Line : 158
File : sessions.php