Stackoverflow error comes when adding serviceProvider

Question

I had Azure function which was written using .NET Core 3.1 and suddenly stopped working and showing StackOverflow exception in below code at TryAddEnumerables

Here is my code

builder.Services
            .AddSingleton<IConfiguration>(config)
            .AddSingleton(serviceProvider => serviceProvider)
            .AddLogging()
            .AddSingleton<IManager, CManager>()
            .AddSingleton<IRegexManager, RegexManager>()

When I comment the below line, StackOverflow error resolved BUT application does to work as expected.

 .AddSingleton(serviceProvider => serviceProvider)

Here is stack trace

What might be the root cause? I have posted the same question here: https://stackoverflow.com/questions/75491471/stackoverflow-error-comes-in-microsoft-extensions-hosting-class