The implementation of Appium time reported this error, please help me analyze what is the reason? I appreciate it!

[longhui_zhang]

[Aleksei]

this error can cause 3 problems (at least what i know):

1. you really did not provide "platformName" in capabilities when start driver
2. appium server does not have access to your app file e.g. to your *.apk file
3. ANDROID_HOME did not set on your PC/MAC

just wonder why all this problems mapped to same error.....

[longhui_zhang]

Well, thank you very much! Your logic is very clear and I'll try some of the ways you say.