Authorization Code is invalid when calling URL from <a href>-Tag

[NoOneHardy]

I am trying to make a web application with Angular and Spotify API.
However when I click on the HTML <a>-Tag with the URL to get an authorization code I get an invalid code, which returns "Invalid redirect URI" when trying to get an access token. When I am pasting the exact same URL in my browser search input, I get a vaild code which works completely fine when I am trying to get an access token.

Has anyone else experienced this?