LoadError - dlopen(/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.3/lib/ffi_c.bundle, 0x0009): could not use '/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.3/lib/ffi_c.bundle' because it is not a compatible arch - /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.3/lib/ffi_c.bundle.......
安装ffi
sudo arch -x86_64 gem install ffi
如果pod install 出错就得换一下命令
arch -x86_64 pod install