Built app doesn't open on MacOs

[dshomoye]

I had worked on an app that worked fine with the npm run start command. I decided to build the app but trying to open the built app fails.
I reverted to the default code here in this repo and did a rebuilt and that didn't work either:

A sample from console:

[r0x0r]

Sorry for the late response.
I reproduced the issue but I get a different error info. This is a py2app issue and it looks like security model has changed in Big Sur. Switching to pyinstaller might help too.

assessment denied for .app
com.apple.message.domain: com.apple.security.assessment.outcome2
com.apple.message.signature2: bundle:org.pythonmac.unspecified.index
com.apple.message.signature3: .app
com.apple.message.signature5: 0.0.0
com.apple.message.signature4: 1
com.apple.message.signature: denied:no usable signature
SenderMachUUID: 818DB070-4938-3106-9784-559DA9C41D40

[mihow]

Does this apply to all pywebview apps on macOS or just this react boilerplate? Does pywebview still work on macOS? Thanks for all your great work.

[r0x0r]

I revisited this issue in Ventura and after fixing build-macos.py, the executable produced by npm run build works with no problems.