Katalon closing abruptly

Web Testing
1

Hi Team,

I am using katalon studio free edition from quite a few days and Katalon is getting closed abruptly.

I tried reinstalling latest version but that didn’t helped. I restarted katalon studio several times properly, i restarted my MAC several times but still its getting clsoed. My mac OS sequoia is 15.5 which is also on latest version but still its getting closed abruptly. Due to this sometimes my work is getting unsaved before i save it, and have to do re-work again.

Due to this issue, i have to click on save button after each action on katalon studio, which is really frustrating.

Let me know if i can share more details here.

Looking for a permanent solution please help.

Attaching the screen shot here.

Screenshot 2025-07-28 at 5.10.41 PM
Screenshot 2025-07-28 at 5.10.41 PM718×762 126 KB

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Action Plan: Resolve Katalon Studio Mac Crashes

Step 1: System-Level Debugging
A) macOS/Zulu/Java Compatibility

  1. Check Installed Java:

bash

# Terminal command to check Java version
/usr/bin/java -version

2.Expect output like java version "17.0.5" or specific versions. Katalon requires Java 8-17.*
3. Install Zulu 17 (if missing Java):

bash

brew install zulu17

B) Disk/CPU/Memory Check

  1. Free Storage:
    Use macOS Storage > System Files to ensure > 15% free disk space.
  2. Activity Monitor:
    Run Katalon → Open Activity Monitor → Check Memory/CPU spikes in Katalon Studio processes.

Step 2: Clean Katalon Installation

  1. Full Uninstall:

bash

# Remove existing installation
rm -rf $HOME/Library/Application\ Support/Katalon
rm -rf $HOME/katalon
sudo rm -rf /Applications/Katalon\ Studio.app
  1. Reinstall

Step 3: Isolate the Crash Trigger
A) Test Scenarios

  1. Create Minimal Test Case:

groovy

// Simple Test Case
class SimpleCase {
    def method1() {
        WebUI.openBrowser('https://example.com')
        WebUI.closeBrowser()
    }
}
  1. Run without Plugins:
    Disable ALL browsers (Chrome, Firefox) → Run empty test suite.

B) Log Analysis

  1. Retrieve Error Logs:

bash

# Find logs
tail -n 50 $HOME/Library/Application\ Support/Katalon/10.3.4/.metadata/.log

Look for patterns:

  • OutOfMemoryError → Increase heap space
  • Port already in use: 50505 → Conflict in settings
  1. Heap Space Configuration:
    Add to ~/.zshrc:

bash

export CATALINA_OPTS="-Xms512m -Xmx1024m"

Step 4: Advanced Solutions

Approach Tools/Commands
Alternative Browser Use Safari/Firefox instead of Chrome
Memory-Safe Mode Run Katalon with reduced plugins:

bash

/Applications/Katalon\ Studio.app/Contents/MacOS/Katalon --CleanLaunch

| Custom JVM Args | Edit katalon.ini:

text

-Xms512m
-Xmx1024m
-Xss2m
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Which type of CPU device do you have? Intel Core? or Apple M1/M2?

Katalon provides 2 types of .dmg file:

image
image1906×202 27.4 KB

Which one did you install?

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