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 ('8437c36c38464ea4d4b518c8af77e089', -1, 1713484058, 1713484058, '038b5638', -1, 0, 0)

Line : 187
File : sessions.php