Nothing happens with local contracts

[nyg]

Hello,

I'm having trouble using the "Local Contract" page. First of all, if I click on the drag & drop zone I can neither select Solidity files nor truffle-config.js files. So I'm not really sure what to do :). Then, if I drag & drop the whole project containing the truffle-config.js file nothing happens. I only get the following:

No file matched the filter criteria. Make sure .sol were uploaded and check the ignore expressions.
4 not .json files skipped.
2 .json files skipped due to ignore expressions.

There's nothing in the web console, except a few empty arrays. I've tried with Firefox and Brave, latest versions.

I would appreciate any help, looks like an interesting project :).