Azure php Error Deployment from local git - using tutorial - php

Question

so I'm new to azure deployment and I try my best to use the microsoft documentation tutorial
https://learn.microsoft.com/en-us/azure/app-service/tutorial-php-mysql-app?pivots=platform-windows
everything is fine until "Deploy to Azure" Step in :
git push azure main
remote: [ErrorException]
remote: Trying to access array offset on value of type null
remote: An error has occurred during web site deployment.
remote:
remote: composer failed
remote:
remote:
remote: Error - Changes committed to remote repository but deployment to website failed.
To https://phpmysqldemogs.scm.azurewebsites.net/phpMysqlDemoGS.git
The log detail from Deployment Center > Logs show I have failed commit with detail log
Command: bash deploy.sh
Creating app_offline.htm
KuduSync.NET from: 'C:\home\site\repository' to: 'C:\home\site\wwwroot'
Deleting app_offline.htm
Running composer install
[ErrorException]
Trying to access array offset on value of type null
An error has occurred during web site deployment.
composer failed
[ErrorException] \r\n Trying to access array offset on value of type null\r\nC:\Program Files (x86)\SiteExtensions\Kudu\95.30831.5373\bin\Scripts\starter.cmd bash deploy.sh
I tried to push again, it says "already up to date"
I tried to clone repo from azure, do composer install then php artisan serve ... it worked locally, so I assume that the problem is in deployment configuration. Can anyone help the production problem?
Thanks in advance.

Answer 1

This error Error - Changes committed to remote repository but deployment to website failed. occurs when you push a local branch that doesn't match the app deployment branch on 'azure'.
To resolve this error, Verify that the current branch is master. To change the default branch, use DEPLOYMENT_BRANCH application setting (refer to Change deployment branch).
You are also getting Trying to access array offset on value of type null error and that is failing composer.
To resolve this error, you need to updater the composer.
composer update
OR
php composer.phar update
You can refer to Troubleshoot deployment and Error "Trying to access array offset on value of type null"