Error to visualization information SuiteCRM 8.6

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Issues after upgrading from 7.14.4 to 8.6.1 - missing formatting in HTML

I managed to fix the problem. In my case it was due to my theme which for some reason did not load correctly. I was simply in my user preferences and did a reset. Right after that no more display problems. I hope this can help other people who are in the same case as me.