Solving the problem “The document could not be saved. A number is out of range”

When I tried to sign e-certificate and save the PDF file using Adobe Acrobat Reader and then I got an error message ‘The document could not be saved. A number is out of range”, I solved the problem by

1. Upload the PDF file on Google Drive
2. Click the menu Print

3. Choose the Destination as “Save as PDF”

4. Then, now I can open the PDF file and digitally sign and save the file :)