Bug when using regex for search

[amorey]

This search term returns an error: /(?=.*(?:settings|about))(?!.*v1)/

https://demo.kubetail.com/console?kubeContext=&source=kubetail-demo%3Adeployments%2Floggen-ansi%2F*&grep=%2F%28%3F%3D.*%28%3F%3Asettings%7Cabout%29%29%28%3F%21.*v1%29%2F