in the attached image you can see the error message that appears when the reinstallation begins. Same now is appearing as I try to run simplebrowser.exe
You are missing icuuc.dll version 68.1-1 - to be found in package libicu (which must match with package icu).
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ok, I've found had libicu 56.1-2 i686 installed, and upgraded to 68.1-1 Pentium 4, went ok.
Then rebooted, reinstalled qt5-qtwebengine and went ok, rebooted, run simplebrowser.exe and
finally the browser window appeared!! now, it would be great if it opened webpages as well, it seems not connecting (see first image) for any given url, no matter if I choose YES or NO, it remains blank (second image) . I also applied Dave's suggestions for highmem loading module in \usr\lib : highmem -c qt5*dll and highmem -c av*dll .
But something happens again if I open a New Incognito Window and enter an URL there , here's the next error message (third image)