Remove spaces from the URL of a new service

[ibarzrm]

Is your feature request related to a problem? Please describe.
When creating a new service, if you enter a copied url with some space at the beginning or at the end, it does not load the information when you click on ‘Get data’.

Describe the solution you'd like
A possible solution would be to introduce in the fetching process a function that removes leading and/or trailing spaces from the URL, if any.

Describe alternatives you've considered

Additional context