Sambapos 5.7.16 what does this button do and why it shows error?

[Jesse]

You should follow the instructions for activating it by running license.exe according to here.

Licensing Considerations for SambaPOS 5.7.14 and later versions

In the new version, where many new features have been added and updates have been made, we would like to draw your attention to some important aspects regarding the licensing of the product. We have made improvements and adjustments in licensing in this version. Therefore, for all SambaPOS versions prior to 5.7.14, it will be necessary to perform a licensing after the update. This means that even if you install over the existing V5, after the installation is complete, you should run Licen…

That button is supposed to launch license.exe but the new version you need to close sambaPOS while you run it.