@Leonie-Kramer Yes, we are using Wordpress. I can see if changing the slug to not include spaces may help.
@lynnp I noticed that too! Usually our developer doesn't help with technical SEO problems like this, so I was trying to solve it myself
But I will try to see if he can take a look at it.
Thanks to both for your answers!
We found an entire pharmaceutical site in one of the folder of our site. We were able to delete it, but now Google is showing us on not found error for those pages we deleted.