Getting error on the Flutter 2

[dev4jam]

upgraded flutter to the latest stable (v2) and ran "flutter clean". When I'm trying to build iOS app I'm getting:

[!] Invalid Podfile file: no implicit conversion of nil into String.

from /Users/dmitry/Downloads/justBreathe-master/ios/Podfile:57

 #  -------------------------------------------
 #      unless File.exist?(copied_framework_path)
 >        FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
 #      end
 #  -------------------------------------------

[jg-l]

Will upgrade the entire package to latest stable soon (2.2)