AppVeyor build failed at Github

I did my first pull request yesterday for Lensfun at Github https://github.com/lensfun/lensfun/pull/1505
RF24-240 and RF50/1.8 are from this ticket https://github.com/lensfun/lensfun/issues/1492

Did I do anything wrong?

Today I did a pull request for darktable and it seems fine https://github.com/darktable-org/darktable/pull/10392