.Net Core exception in nopCommerce 4.1 using NopTemplates theme

Using Uptown theme(by nop-templates) with plugins in nopCommerce 4.1 getting error of entity framework randomly and site stopped running.
Error message: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.

Got errors in two times on 8 days. Both times site stopped and came back after restart from IIS.
One is for Anywhere slider plugin and another is for Rich blog

I have added screenshots for both times

I think it will be resolved quickly if you submit a ticket on Nop-template's website.
https://www.nop-templates.com/HelpDesk/NewTicket

We didn't get any solution there

may be an issue in Core itself:
https://github.com/dotnet/runtime/issues/26868
https://github.com/dotnet/efcore/issues/12713