Why can't i run my xcode project in simulator in 12+?

as the title suggests, i cant run my (objective c) project in xcode after upgrading to Xcode 12. It is a Cocoapods project.

It works fine when i deploy to my phone, but in the simulator
I get three different errors for some reason.
  1. It complains about "missing module map" for a separate project i include:

module map file '...(path)/Build/Products/Debug-iphonesimulator/MyLibraryProject/MyLibraryProject.imagemap' not found

2. It complains about a precompiled header:
<unknown>:0: error: failed to emit precompiled header '(path)/Build/Intermediates.noindex/PrecompiledHeaders/myProject-Bridging-Header-swift2UGSYUUFRK85M-clang18QKMU0TXX4JD.pch' for bridging header '(path)/iphone/myProject/myProject-Bridging-Header.h'

3. Finally it complains about Not finding a bundle for a library that i use:
error: Resource "(path)/Products/Debug-iphonesimulator/FCAlertView/FCAlertView.bundle" not found. Run 'pod install' to update the copy resources script.

Again, i can build and deploy to my phone, and submit to TestFlight/Appstore, but if i pick an emulator it's crash and burn.


I am not very knowledgeable about xcode inner workings, so if anyone has any pointers, i'd be *most* grateful.