TestLink 1.9.0 installation error (Fatal error: Uncaught Error: Attempt to modify property "results" on null in C:\xamp

Keywords: TestLink - Windows - Technical issue - Other
TestLink 1.9.20 installation error (Fatal error: Uncaught Error: Attempt to modify property “results” on null in C:\xampp\htdocs\Testlink\cfg\const.inc.php:409 Stack trace: #0 C:\xampp\htdocs\Testlink\install\index.php(20): require_once() #1 {main} thrown in C:\xampp\htdocs\Testlink\cfg\const.inc.php on line 409) I’m trying to install TestLink in my local, however, kept on encountering this error once open http://localhost/testlink/install/index.php. Web app runs on XAMPP . All the pre-requisites are successfully installed in the system.

Hello @Shawill,

It seems you are trying to install Testlink on top of XAMPP. This is the list of modules that can be installed with XAMPP:

In order to install Bitnami Testlink Stack, please choose an empty different installation directory.



Based on what you said - does it mean that Testlink cannot be installed on XAMPP?
Could you please tell how to get around the error?

you also mentioned empty different installation directory - do you mean a different htdocs?
If yes, then how would apache recognize the same?

thank you

Hi @akashmmxx,

We don’t offer modules for testlink, so it could not be installed on top of XAMPP. We provide Bitnami Testlink Stack, which contains all the components to run Testlink. It will install another Apache, MySQL… that’s why you need to use an empty folder to install the stack.


Hi @davidg Do you know the link to download Bitnami Testlink Stack and installation guide?

Thanks mate

Hello @Shawill,

You can find Testlink installers in the link below:

This is our documentation: