Yes, and I'm also getting a 500 error, but it may be for a different reason. It would be helpful to post the "detailed error information" that you see in your browser, especially the error code (not 500). The error code I get is 0xc0000005, an access violation, which apparently indicates a memory error that the operating system doesn't know how to deal with. I'm still looking for a solution.
I see that you're using Pro's default conda environment. I assume you've installed wfastcgi there, although Esri apparently discourages changing anything in that environment.