flet build apk error using flet 0.22.0

[ncxs101]

Help me please...

C:\Windows\system32>flet build apk c:\my_app
Creating Flutter bootstrap project...OK
Customizing app icons and splash images...OK
Generating app icons...OK
Generating splash screens...Could not find a file named "pubspec.yaml" in "C:\Users\Rendi
Arisandi\AppData\Local\Pub\Cache\hosted\pub.dev\cupertino_icons-1.0.8".
#0 new Pubspec.load (package:pub/src/pubspec.dart:224:7)
#1 new Package.load (package:pub/src/package.dart:131:29)
#2 Entrypoint._createPackageGraph (package:pub/src/entrypoint.dart:180:36)

#3 Entrypoint.resolveExecutable (package:pub/src/entrypoint.dart:556:8)

#4 getExecutableForCommand (package:pub/src/executable.dart:350:16)

#5 RunCommand.run (package:dartdev/src/commands/run.dart:349:20)

#6 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#7 DartdevRunner.runCommand (package:dartdev/dartdev.dart:249:18)

#8 runDartdev (package:dartdev/dartdev.dart:57:16)

#9 main (file:///C:/b/s/w/ir/x/w/sdk/pkg/dartdev/bin/dartdev.dart:11:3)

Error building Flet app - see the log of failed command above.