You have to install a new module on the production environment. All the module is adding a new product attribute. You enabled maintenance mode, copied the module code, run bin/magento setup:upgrade and disabled maintenance mode.
What two risks does this process pose? (Choose two.)

A merchant requires the ability to configure contact information for their brick and mortar stores as a CSV file upload. The module already exists and contains an etc/adminhtml/system.xml file where the new field can be added.
How do you specify the class that will process the uploaded file?

The module MyCompany_MyModule will add a new page in the admin interface to display a custom entity in a grid.
You created a controller for this grid \MyCompany\MyModule\Controller\Adminhtml\CustomEntity\Index Which two actions are required to make the new page accessible at the
https://your.store.base.url/admin/my_module/custom_entity URL? (Choose two.)

In the module located at app/code/MyCompany/MyModule there is a JS module in the file view/frontend/web/register.js. The Magento base URL is https://magento.host/ and the luma theme with the en_US locate is used.
What is the public URL for this file?

You need to find all orders in the processing state. You have written the code:

When you run the code, you get the following exception:

How do you resolve the exception?