Flutter; Class AMSupportURLConnectionDelegate is implemented in both ?? (0x1eb0e27a0) and ?? (0x1162f02b8)

Question

Running pod install...                                              1.6s
Running Xcode build...                                                  
Xcode build done.                                            7.6s
Failed to build iOS app
Error output from Xcode build:
↳
    objc[9381]: Class AMSupportURLConnectionDelegate is implemented in both ?? (0x1eb0e27a0) and ?? (0x1162f02b8). One of the two will be used. Which one is undefined.
    objc[9381]: Class AMSupportURLSession is implemented in both ?? (0x1eb0e27f0) and ?? (0x1162f0308). One of the two will be used. Which one is undefined.
    ** BUILD FAILED **


Xcode's output:
↳
    1 error generated.
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Could not build the precompiled application for the device.

I have tried deleting the bin/cache folder as well, and it has not worked. Running on an M1 Mac.

Answer 1

In my case I solved the problem by removing a Firebase library I was using for the storage on the web. It was conflicting with the iOS version for some reason.