need license file
Here is a tip - "How to Acquire 30 days License for Mathcad Prime 7.0 ?": https://community.ptc.com/t5/PTC-Mathcad-Installation/How-to-Acquire-30-days-License-for-Mathcad-Prime-7-0/m-p/721613#M413
This was not the issue I was having.
You need to describe your problem in more detail and show a screenshot of the error that occurs.