/search-results page returns 404 if no query parameter is present

Question

I have inherited a Drupal site with a node that uses /search-results as path alias.

The page works fine if I use https://example.com/search-results?keys=test or https://example.com/search-results?keys, but it returns a 404 error if I use https://example.com/search-results.

Any thoughts on where to begin?

Answer 1

How do you process the parameter? Is there a module to look at it? or you do it in your .theme hooks?

In any case you wanna try to set a default respose for the function you are using to process that key parameter.