Hello,
Really that’s a very strange issue.
Please refer to this link for a solution:
https://stackoverflow.com/questions/63187010/e2808b-appears-in-url-net-core
Open the code with a text editor and write href="financial-and-investment-services" again (without copy/paste).
If we inspect with developer tools the code is there:

So probably the issue is like explained on the provided link.
Hope this helps!
Kind Regards,
Rodrigo.
If you are satisfied with Porto HTML and our support, please leave your comment and rating on ThemeForest downloads page. That helps us a lot: https://themeforest.net/downloads