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 ('ada7be9d21df4cb8635a5f278222f93d', -1, 1713898422, 1713898422, '038d08f7', -7, 0, 0)

Line : 187
File : sessions.php