Error: Current environment doesn't provides some necessary feature this generator needs.

This error message is a very difficult error to troubleshoot when it occurs. So far, it's only happened to myself (Will) once. When it happened, there's very little helpful information available out there regarding this specific (and misspelled) error message.

Symptoms

When I first noticed this occur, it was after a long period of time when I wasn't keeping up with all of the various npm packages and dependencies that were installed.

After updating NodeJS and npm, the following message began to appear whenever I'd attempt to run the yo upendodnn command.

Current environment doesn't provides some necessary feature this generator needs.

Resolution

After a ton of troubleshooting over several hours, I was able to resolve this issue using the following steps:

1. If it exists, first, delete the /node_modules/ folder in the local installation folder where the generator-upendodnn source code exists. (This only applies to developers that are working on updated to this generator.)
2. Begin following the original installation instructions from the beginning, as if you've never installed it before.
3. Begin following the original development instructions over again from the beginning.
4. Run the yo upendodnn command again. (This may require closing and opening a new cmd prompt window.)