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 ('ec9f9a1da178689c06d837d8a1da3ce5', -1, 1713580662, 1713580662, '038b4683', -4, 0, 0)

Line : 187
File : sessions.php