Your team is working on two ma)or changes affecting the product page and you want the ability to implement and test these changes in parallel. Your company is using the Pro plan How do you achieve this using the Project Web Ul?

You added the env:ADMIN_PASSWORD variable in the Project Web Ul to change a Magento admin user's password After deployment you are unable to login using the new password What causes this?

You want to improve the ability to monitor Production deployments by setting up an email notification system How do you achieve this?

After installing a Magento extension that implements a new class for a site and deploying this to an integration environment you see it is not working.

In the logs you discover the following error:
How do you fix this?

You cloned the Integration branch to your local environment and Imported the database dump from Integration. You performed composer install and bin/magento setup:install.
While placing an order using PayPal Express, the following error occurs:
PayPal gateway has rejected request. Security header is not valid (#10002: Security error).
What Is the cause of this error?
Paypal gateway has rejected request, Security header is not valid (#10002: Security error).
What is the cause of this error?