HTTP Error 500.19 - Internal Server Error This configuration section cannot be used at this path

Suddenly the websites I host on my local IIS Express started giving the following error

HTTP Error 500.19 - Internal Server Error

Error Code     0x80070021
Config Error       This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".
Config File    \\?\C:\Websites\MySite1\web.config

Config Source:
    7:    </modules>
    8:      <handlers>
    9:        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />

Dont know what has happened. Initially I suspected it was something with one of the site. I then realized that none of them works and they all give the above error. I have googled for this error but none of the links I found solved the issue

Anyone can assist?