A classic "works on my machine" 😄
Forget committing changes. Backup the rest of your work and send your laptop up to prod!
The bit that hung me up was that the files themselves WERE committed and present, and the other developer could see them, but since they weren't referenced in the .csproj file, they didn't make it production. I don't know how many times I did that in the early going.
Oh that's so weird. I've not worked with C# or Visual Studio and this would definitely catch me out.
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