Hi Sergei Shibanov,
PFB my answer of your queries.
Is it possible use Only first two lines for reproduce issue?
Answer- Yes
Answer - htmlString as read html from file as string and pass it, which I have shared.
Htm…...CultureNotFoundExcep: Only the invariant culture is supported...to "6.0-alpine3.14" as below (only change… Running .NET 6 project...