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 ('47035f8b6813899e72c8c22b7f4a5597', -1, 1713560054, 1713560054, '030e8e73', -4, 0, 0)

Line : 187
File : sessions.php