In a larger context I resorted back to creating a blank project and running my build commands. Same error:
ionic start myApp blank
cd myApp
ionic cordova run
This problem is caused because of Xcode 10. I resolved this issue by two ways.
ionic cordova build ios -- --buildFlag="-UseModernBuildSystem=0"
Create a build.json file on root of project.
In build.json write below code.
{
"ios": {
"debug": {
"buildFlag": ["-UseModernBuildSystem=0"]
},
"release": {
"buildFlag": ["-UseModernBuildSystem=0"]
}
}
}
After that you can run these commands without any error.
ionic cordova build iosionic cordova run iosionic cordova run ios --target="iPhone-6s" -l