For the error message you are receiving
Failed to get resource ID for resource type 'Microsoft.Web/Sites' and resource name 'AzureDevops-App'. Error: Could not fetch access token for Azure. Status code: 400, status message: Could not fetch access token for Managed Service Principal. Status code: 400, status message: Bad Request
This is caused by the authentication token is invalid or expired, you may try to Authorize a new connection.
Also see this similar query here might be helpful-
Fix Azure DevOps TF14045 Error When Deploy to Azure
Also, you may want to know that Azure DevOps is not supported on Microsoft Q&A. Please check this supported products list here.
The Azure DevOps team and community are active and answering questions on https://developercommunity.visualstudio.com/spaces/21/index.html suggest you post your question there and experts will guide you.
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