Comparing two PDF files return null with temporary license applied in Java

Hi,
When I deploy the project to the server, Compare result return null when Adding doccument pdf. i had temporary license. This is log:
errorPDF2.PNG (5.2 KB)
errorPDF.PNG (18.0 KB)
err3.PNG (19.2 KB)
extension: doc, xlsx : compare normal
I need to demo for customers to decide to buy GroupDocs.Comparison library, hope to help.

@hung.hoangmanh,

Can you please share the source and target PDFs with us?
Do you face this issue when comparing a particular set of PDFs? Or it is common for all the PDF documents?

target.pdf (173.2 KB)
source.pdf (129.6 KB)
Some sample i use to compare. when i deploy to server, error occurred. Comparing return null but when i compare in local, when i compare pdf in local, output is normal.

@hung.hoangmanh,

Can you please share server details with us?

@atirtahir3 I can’t public server of project. i only share for you some pictures of code and ui.
err1.PNG (46.0 KB)
err2.PNG (9.2 KB)
err3.PNG (10.0 KB)
err4.PNG (38.3 KB)
Hope to help.

@hung.hoangmanh,

Did you deploy/run this showcase project on server?
If yes, did you make any change in the project?

Because the above screenshot has a different layout.

@atirtahir3
No, i don’t deploy above showcase project on server.
I only base on this sample to do my project. I don’t know why there is a difference between my local version and my deploy version. Is it related to trial license or another reason? It is difficult to detect and find bug or your lib.

@hung.hoangmanh,

Do you face this issue with all PDF documents?
Can you please share problematic PDF files and above mentioned word/excel files along-with resultant/output document? Also share your license expiry date.