there only exist extensions, which work on App Inventor and all its distributions like Appybuilder, Thunkable or Makeroid, there do not exist special extensions, which only work on specific distributions
however there are the extensions from Helios aka @vishwasadiga, i.e. the Dialogs extension and the Extra Components Extension, which work separately, but not both together in a project… this because he unfortunately does not like to rebuild the extensions and follow the suggestions given already a few times…
https://community.thunkable.com/t/error-occurred-while-compiling/5223/4?u=taifun
Taifun