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 ('65a2d384ee2b2f5606dd6f7c4ab3f8fe', -1, 1714358854, 1714358854, '12bf87e0', 19, 0)

Line : 158
File : sessions.php