Thanks again, this worked perfectly for me. FYI, I received the same Nginx gateway timeout error but all is OK, the installation completed in the background.
Ok, it seems there is some issue with the precompiled package included the tutorial https://github.com/nopSolutions/nopCommerce/releases/download/release-4.20/nopCommerce_4.20_NoSource_FrameworkDependent.rar
When I downloaded the source code nopCommerce_4.20_Source.rar, built it and published onto the vm the nopCommerce 4.20 installed OK!
will you share the compiled version to me? I have the same problem,thanks.