We need to improve way to report errors

[NyakudyaA]

Problem

@dimasciput was trying to access the following URL https://geocontext.kartoza.com/api/v1/geocontext/value/group/30.77825/-24.73478/eco_geo_class/

But in fact, it needed to be https://geocontext.kartoza.com/api/v1/geocontext/value/group/30.77825/-24.73478/eco_geo_group

The request gave a 404 but no definitive error message.

Whilst interacting with the API we expect users to know the contents of the json file. It would be awesome to change our input boxes from free text to use autocomplete so that users can generate the correct URL

[andretheronsa]

I'll see if we can insert a dropdown list of available options