"O documento não pôde ser salvo. Um número está fora do intervalo."

Hi @Noá29469227gd5o 

We apologize for the delay in response. If you are still struggling with the same error message, then please try the following steps:

When you try to view a PDF or delete a page from a PDF, you see the error message "A number is out of range". You may see the same error message when you try to perform other actions on the PDF, such as combining it with another PDF or inserting a new page. 

https://helpx.adobe.com/acrobat/kb/a-number-is-out-of-range-error-viewing-pdf-deleting-pages.html 

Thanks,

Akanchha