I'm trying to install an extension using the Setup Wizard that can be accessed using the route System > Tools > Web Setup Wizard, but just the Component Manager page it's not working, after a long period loading I received this page below:
Further information
- In the System Upgrade screen, all the checkpoints are ok.
- My System Configurations page is configured right, using my keys.
- I'm not receiving any error message related to
max_execution_time - I've tried to access the URL
mystore.com/setup/index.php/componentGrid/componentsbut I receive the same error 503.
I've tried these two solutions before:
I have 500 Internal Server Error in Component Manager
Magento 2: How to solve the error 500 in Web Setup Wizard when installing Amazon Pay?
Do you have some idea to try?

