Out of interest, I tried building a different app which does not use Firebase and that also fails to build.
```Error: ENOENT: no such file or directory, open '/platforms/ios/my app name.xcodeproj/project.pbxproj'
at Object.readFileSync (node:fs:441:20)
at pbxProject.parseSync (/plugins/cordova-plugin-add-swift-support/node_modules/xcode/lib/pbxProject.js:61:28)
at /plugins/cordova-plugin-add-swift-support/src/add-swift-support.js:68:20