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 ('a4bd8ef6a21c68c08fd74d7a3eb56247', -1, 1713422428, 1713422428, '038a71bc', -4, 0, 0)

Line : 187
File : sessions.php