Cannot verify the signature of 'APIDemos.apk'. Unable to locate a Java Runtime

Mobile Testing
1

Hi!
Katalon 9.7.2
Mac OS 15.0
Getting such list of issues when try to run Sample Android Mobile Tests Project ([Mobile] Configure Android Emulator | Katalon Docs)
Original error: An unknown server-side error occurred while processing the command.
Original error: Cannot verify the signature of ‘/Users/user/Katalon Studio/Test Android Emulator/androidapp/APIDemos.apk’.
Original error: The operation couldn’t be completed. Unable to locate a Java Runtime.

Can anyone help me with fixing, please?

1 Like
2

installed jdk on Mac?

3

Hi @daristarkhov,

Welcome to our community. Thank you for sharing your issue. I would love to suggest you doing as follow:
It seems like you’re encountering multiple issues when trying to run the Sample Android Mobile Tests Project in Katalon 9.7.2 on macOS 15.0. Here’s a breakdown of the errors you’re facing and how to potentially resolve them:

1. Error: Cannot verify the signature of ‘APIDemos.apk’

This error likely indicates an issue with the APK file (either it’s unsigned or the signature is problematic). Here’s how to resolve this:

  • Re-sign the APK: You can re-sign the APK using Android tools (like jarsigner or Android Studio) or manually:

    1. Use jarsigner to sign the APK:
      jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore <path_to_keystore> <path_to_apk> alias_name
    2. Make sure the APK is then properly aligned:
      zipalign -v 4 <path_to_unsigned_apk> <path_to_signed_apk>

  • Use a different APK: If you’re working on a sample project, try downloading a fresh version of the APIDemos.apk from the Android SDK or the official sources to avoid any corruption or signing issues.

2. Error: Unable to locate a Java Runtime

This error typically occurs when Java is not installed or configured correctly on your Mac. Katalon Studio requires Java to run properly.

Steps to resolve:

  • Install Java: You can download and install the latest Java Development Kit (JDK) from Oracle’s official site or use the OpenJDK available via Homebrew.

    brew install openjdk

  • Set JAVA_HOME environment variable:
    After installing Java, make sure the JAVA_HOME variable is set correctly. You can do this by adding the following to your .bash_profile (or .zshrc if using Zsh):

    export JAVA_HOME=$(/usr/libexec/java_home)

    Then, reload the terminal by running:

    source ~/.bash_profile  # or source ~/.zshrc

  • Check if Java is properly installed:
    Run the following command to check if Java is recognized:

    java -version

If Java is correctly installed and configured, it should return the installed version of Java.

Try these steps, and let me know how it goes!

4

Thank you very much for your help!

5

if the issue is resolved, kindly mark appropriate reply as solution