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 ('569f1590a3abd3f62422322536237f2b', -1, 1713537498, 1713537498, '030ef6fe', -4, 0, 0)

Line : 187
File : sessions.php