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Cannot convert access token to JSON

Condition​

You may encounter the following error message when opening the Tunnel Setup Helper dialog in Katalon Studio: "com.kms.katalon.network.core.model.exception.NetworkErrorException: Cannot convert access token to JSON".

Solution​

For users from the EU region or other regions outside the US region, log in or override authentication using your account subdomain.

Option 1

  1. In the Log in to Katalon Studio dialog, select Advanced settings.
  2. In the License server address, enter your subdomain URL in this format: https://{your_subdomain}.katalon.io. Advanced settings in login dialog
  3. Save and try again.

Option 2

  1. Go to Project > Settings > Katalon Platform.
  2. Enable the Override authentication option. Override authentication using EU subdomain
  3. Provide your account subdomain in the Server URL field and the user credentials.
  4. Fetch Organization to test if it overrides successfully.
  5. Click Apply and Close to save the settings.
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