I am trying to run pod install on my Flutter application to build ios but currently getting the follow error:

# We are renaming openssl to openssl_grpc so that there is no conflict with openssl if it exists
find . -type f ( -path '*.h' -or -path '*.cc' -or -path '*.c' ) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'

# Include of boringssl_prefix_symbols.h does not follow Xcode import style. We add the package
# name here so that Xcode knows where to find it.
find . -type f ( -path '*.h' -or -path '*.cc' -or -path '*.c' ) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <boringssl_prefix_symbols.h>;#include <openssl_grpc/boringssl_prefix_symbols.h>;g'

gunzip: unknown compression format

So far these are the steps I have tried:

1. Reinstall cocoapods: sudo gem uninstall cocoapods and then sudo gem install cocoapods (I have also tried to use homebrew but still got the error)
2. cd ios
   My podfile is

platform :ios, '13.0'

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  pod 'Firebase/Firestore'
  pod 'Firebase/Auth'
  pod 'Firebase/Core'
end

3. Remove Pods/ folder and podfile.lock: rm -rf Pods Podfile.lock
4. flutter clean and then flutter pub get
5. when running pod repo update and then pod install, I get:

The error seems to be related to installing BoringSSL-GRPC (0.0.32) but it doesn’t seem to be a network error.

I also tried to increase the max size of the http post buffer with git config --global http.postbuffer 10000m but to no avail. I have also tried to use different networks and VPNs with no change.

It also seems that cloud_firestore relies on BoringSSL-GRPC being installed, because when I have a podfile without dependencies on it, there is an error that cloud_firestore module is not found and the build fails.

platform :ios, '13.0'

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  pod 'Firebase/Analytics'
end

Any help would be appreciated, thanks!