How to resolve error of "errSecInternalComponent" while building archive for appstore?

I am trying to submit flutter app to Appstore. Here are the steps I followed:

Deleted all certificates and provisioning profiles

Create/Add IOS Distribution Certificate

Create IOS Provisioning Profile

Add IOS Provisioning Profile

Clean App

Build Then Run App

Set Codesigning and Provisioning Profile In Build Settings

Lots of Googling > to no successes

Basically, facing the error of "errSecInternalComponent"

Here is the error I get:

 Warning: unable to build chain to self-signed root for signer "iPhone Distribution: Johnny  (**********)"
    /Users/johnny/Downloads/chat_app-master 2/build/ios/Release-iphoneos/Runner.app/Frameworks/App.framework/App: errSecInternalComponent
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Solution

You are having an issue with a certificate, that's why you get this warning. You need to generate a new one.

Try this: xcode -> preferences -> accounts -> select the account -> manage certificate -> click on the (+) icon in the bottom left side of the popup window -> ios development