Below is Azure error log from the Azure release pipeline.
2020-07-24T05:17:13.7712974Z ##[section]Starting: Deploy Azure App Service
2020-07-24T05:17:14.0464143Z ==============================================================================
2020-07-24T05:17:14.0465719Z Task : Azure App Service deploy
2020-07-24T05:17:14.0469391Z Description : Deploy to Azure App Service a web, mobile, or API app using Docker, Java, .NET, .NET Core, Node.js, PHP, Python, or Ruby
2020-07-24T05:17:14.0469849Z Version : 3.163.5
2020-07-24T05:17:14.0470410Z Author : Microsoft Corporation
2020-07-24T05:17:14.0470921Z Help : https://aka.ms/azureappservicetroubleshooting
2020-07-24T05:17:14.0471274Z =============================================================================
2020-07-24T05:17:16.0650643Z Got connection details for Azure App Service:'XXXXX'
2020-07-24T05:17:17.6576087Z (node:764) Warning: Use Cipheriv for counter mode of aes-256-ctr
**2020-07-24T05:17:17.6627737Z ##[error]Error: No package found with specified pattern: D:\a\r1\a\Drop<br/>Check if the package mentioned in the task is published as an artifact in the build or a previous stage and downloaded in the current job.**
2020-07-24T05:17:22.9168975Z Successfully added release annotation to the Application Insight : XXXXX
2020-07-24T05:17:24.8686063Z Successfully updated deployment History at https://XXXXX.scm.azurewebsites.net/api/deployments/231595567842919
2020-07-24T05:17:24.8933576Z ##[section]Finishing: Deploy Azure App Service
P.S. I have checked build pipeline, I can download build Artificats, but it displays below warning.