Server Error: Unable to build target. Please try later

Hello, I get an error message when I try to build the apk. I don't understand why given that it used to work great.
Can anyone help me ?

My English is not very good sorry.

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Can you share some screenshots of it @Bastien_Fourneron

I share you a drive link to have the aia (it will be easier like that)

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It is opening in files upload it directly or give me the screenshot

Click on the download button at the top right of screen in google drive....

it is opening in files, extraccted forms

Looks like you are not switching screens correctly. This could be why the project will not build....

Use different screens wisely

If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a while...      
The recommended method of switching screens in App Inventor
(Thanks Taifun)
Also see demo: multiscreen.aia

You .aia compiled for me on

I almost didn't bother trying when I saw the size of your assets.:

Your .aia file is 22 MB, and your assets are big.

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