Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
When I try to use clicked signal of addCompanyButton in this case, doesn't appear, but when I use PyQt5 instead of PySide2 it works, I don't know why.