Solr spellcheck: cannot show result, always receiving same error

Question

So, Im quite new on solr, and maybe I have so many understanding problems.

What Im trying to do right now, its an autosuggestion for my search bar. For example, if you

Answer 1

I found this answer to help me solving a similar problem with the exact same error message. Your problem might be that you have defined two different fields for the different spell check definitions:

<str name="field">item</str> AND <str name="field">name</str>

these should be equal. This is what Solr is complaining about.