"Merge PDF Files" Acton - Error (Object reference not set to an instance of an object.)

[Anonymous]

Hi Community 

I am facing an issue while merging two PDF files through Power Automate Desktop. Can anyone help?

Error:Microsoft.Flow.RPA.Desktop.Robin.SDK.ActionException: Failed to merge PDF files: 'C:\Users\Umar.Shahzad\Desktop\Registry6.pdf', 'C:\Users\Umar.Shahzad\Desktop\Registry3.pdf' ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Flow.RPA.Desktop.Modules.PDF.Actions.PDFium.PDFium.FPDF_SaveAsCopy(IntPtr doc, FPDF_FILEWRITE writer, Int32 flags)
at Microsoft.Flow.RPA.Desktop.Modules.PDF.Actions.MergePDFFilesAction.Execute(ActionContext context)
--- End of inner exception stack trace ---
at Microsoft.Flow.RPA.Desktop.Modules.PDF.Actions.MergePDFFilesAction.Execute(ActionContext context)
at Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)

 

[Benny_1857]

Not sure, I tried same way and no problem.

Also, I read some tips that upload the files into web for PDF to do that.

https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/

It might be another way to automatic.

[Anonymous]

Thank you Benny_1857

Let me explain in detail. 

I use the action "Merge PDF Files" and use it to merge two files, namely Registry 1 and Registry 2. The process runs successfully but in the merged file Registry 2 comes as first page Registry 1 as second despite the fact the sorting is ascending. I want to Registry1 to become the first page. So I thought it may be due to sorting. So I changed the sorting to descending and run. However, this time the process goes in error and produces the error in my first message. No matter what I do I am unable to make registry 1 as first page. Can you please test this at your end and let me know if you end up in the same error. 

Thanks

[Ahammad_Riyaz]

Pease refer this, for me it was working.

[Anonymous]

Thanks Ahammad. Can you please check the page order in which they were merged. I also messaged earlier a bit in detail. Were you able to reproduce the issue by changing the sort order?

[Benny_1857]

When I get the files from folder, I set the accending sort by FullName in advanced. 

It works.

[Anonymous]

Thanks. For some reason it is not working for me.

[Benny_1857]

I am not sure. I just guess whether it is because of sort by text?

For example sort 3 file name acceding. A2.PDF,A3.PDF,A12.PDF
After sort it will be A12.PDF,A2.PDF, A3.PDF

[Anonymous]

Sorting is perfectly working fine. But merge is not merging according to sort order. If I select ascending it merges fine but in descending order. If I select descending it goes into error. 

[XRQ57]

Hi,

I tried too and no problem for me.

Have you the last version of PAD?