Installation problem: App dows not start in qube, only in TemplateVM

I installed my notebook with Qubes-OS 4.1 two weeks ago after using Ubuntu before. My work qube is based on the Debian template. I have done some software installation in the template VM for use in the work qube and had no problems at all.
Now I want to install a software to have my data synced from my NAS to the work qube’s user folder, which is QNAP QSync: Essentials | Utilities | QNAP
The software is tested on Unbuntu, but it is possible to install it on Debian, too. I did that as I did with all the other applications and there were no error messages during the installation process with apt. However, the software now doesn’t start in the work qube. After some time I found out, that it starts in the template VM very well?!
But it should not be the goal to have personal data in a template VM.
Has anyone an idea what could be the reason for this behaviour?
Many thanks in advance for your help.

Hi @Markus, welcome to the Community! Perhaps on of these links could help you:

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I have now found out that app files had been stored in /usr/local/bin and /usr/local/lib of the template. Copying of these subfolders to the qube has solved the problem.
Thanks very much.

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