When I open the Google Cloud Shell Code Editor it is not loading the resources and hence I am unable to work. I have attached a screenshot below with a view of the developer tools console. Please help me out. Thanks.

When I open the Google Cloud Shell Code Editor it is not loading the resources and hence I am unable to work. I have attached a screenshot below with a view of the developer tools console. Please help me out. Thanks.

This issue seems to be related to an internal project/billing configuration. Since this kind of access errors are thrown when the accounts have payment issues, I think that you should firstly verify that your billing account is in a good status; however, if you continue getting these error messages after this validation, I suggest you to take a look the Issue Tracker tool that you can use to raise a Cloud Shell ticket in order to verify this scenario with the Google Technical Support Team.
A couple things could cause this:
An interfering browser extension
Are you using any browser extensions that could be interfering (e.g., an ad blocker)
A bug.
As @Armin_SC suggested, use Issue Tracker to file an issue in this case.
As a workaround, you might want to try gcloud compute ssh to connect to your instances.