HalFranklin
I understand 17.2 is LTSC, although we need to move on to 17.4 and newer in order to support new features.
I would recommend updating Visual Studio to at least 17.4.
17.2 was supported a year ago. Unfortunately, we forgot to mention this in our release notes. An older version of PHP Tools can be found on https://www.devsense.com/en/download/vs