Scriptcase Headers Error

I have deployed the scriptcase application unto a ubuntu 20.04 server. The application works fine when accessed from the local browser. But when I access it from a nother machine some of the applications show the following:

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXpx" width=“0px” name=“nm_iframe_liga_A_grid_tblreviewcycle_growth” scrolling=“auto” src=“NM_Blank_Page.htm”>
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXpx" width=“0px” name=“nm_iframe_liga_E_grid_tblreviewcycle_growth” scrolling=“auto” src=“NM_Blank_Page.htm”>

I think it has something to do with the headers, can someone please help me, I have been struggeling for 3 days now.

And when I access the production environment and click configure production environment and click save: it says that web page blocked.

Any ideas?