PDF to PPTX gives "object reference not set to an instance of an object"

hi

can you help please ? thanks.

pdf:

code:
Aspose.Pdf.Document doc = new Aspose.Pdf.Document(pdf);
Aspose.Pdf.PptxSaveOptions pptx_save = new Aspose.Pdf.PptxSaveOptions();
doc.Save(ppt, pptx_save);

win11/.net 4.8/aspose.pdf 23.3.0

stacktrace:
à #=z_cnsM6uAbrixcLi7OScEZx8=.#=zjCYPTG8=(String #=z4QIAYtI=, #=z1K$czltyKcaw2yL8Lwx2ZYicxVXP #=z7ZXn1Dw=, #=zJAOAWCzSTphB7PSOF1WNl$aKKcRa #=zcPuCEP4=, #=zagzu0fZ3Ni_C9PVPw6ACbypv3HW4 #=zphrHPxs=)
à #=zW2FuL3$eKZ20FetoczCQ9$WGMfAj3BRTOw==.#=zktKRsex0Pd6b(#=zlCHIKJ9CIPED_WpyBhtbmwI= #=z3Lp$$sscQ7JI, Int32 #=zsKfhzk4=, #=zvwULNYaBLPxIs4QAOWLT8Ni8H8LE #=zQTXcc6o=)
à #=zW2FuL3$eKZ20FetoczCQ9$WGMfAj3BRTOw==.#=zktKRsex0Pd6b(#=zlCHIKJ9CIPED_WpyBhtbmwI= #=z3Lp$$sscQ7JI, Int32 #=zsKfhzk4=)
à #=zW2FuL3$eKZ20FetoczCQ9$WGMfAj3BRTOw==.#=zUC36AlUQiMJL(#=zFd6Q$RJ$R5cIVceLqDgjI0f0pGOAOhejHQ== #=z4T854V4=, List1 #=z$dSDhZM=) à #=zfQ4EUF4UYiGiQEyp2$m_wyVi83B_y3JMVQ==..ctor(#=zJc3b3z4QZBpHnFRHpyFMrwF8c3JA #=zrpVlAPI=, #=zEtL3C0lwDuQVx7pexSxOahG8vQ7nv5aemo9jhDo= #=z$RP0PDw=, List1 #=z8H0fDV4=, List1 #=z2zzIx$M=, Boolean #=zzdRh1E2U2_dXx$ROF5M7IJUDA06hq8umcA==, Boolean #=zc$VaTeDKPnufLQwZ7Q==) à #=z_Kwfwt$HQo$QDUbWIyIjR0IkO9VeArkpsw==.#=zMiauoUG1fPADIjPU9Q==(#=zMaz3oktzKqtOeBiGNri26VY= #=zOhPEwh0=, Single #=zSt1RAghLZnUv, Single #=zyNKRN7EsgPkA, #=zEtL3C0lwDuQVx7pexSxOahG8vQ7nv5aemo9jhDo= #=z$RP0PDw=, Boolean #=zzdRh1E2U2_dXx$ROF5M7IJUDA06hq8umcA==, Boolean #=zc$VaTeDKPnufLQwZ7Q==, #=z_Kwfwt$HQo$QDUbWIyIjR0IkO9VeArkpsw== #=zmfIrYow=) à #=z_Kwfwt$HQo$QDUbWIyIjR0IkO9VeArkpsw==.#=zMiauoUG1fPADIjPU9Q==(#=zMaz3oktzKqtOeBiGNri26VY= #=zOhPEwh0=, Single #=zSt1RAghLZnUv, Single #=zyNKRN7EsgPkA, #=z_Kwfwt$HQo$QDUbWIyIjR0IkO9VeArkpsw== #=zmfIrYow=) à #=z_Kwfwt$HQo$QDUbWIyIjR0IkO9VeArkpsw==.#=zBX88Qy4VBiL0EtoPMILrj7Y=(#=zMaz3oktzKqtOeBiGNri26VY= #=zOhPEwh0=, SizeF #=zXP8aMxo=) à #=zuq3z3r87rMR21_Qo_MD23ggsKnGKjh0JGGaVXws=.#=zV$ZOgkQ=(IList1 #=zUGwlkK26x7xW, #=zZSOWd4g15wpZQqW4IDbbC$a3t5YajDinSg== #=zbP83Ve8=, #=z7E29wmKszIjhIv3k3uo_vZ5613gSqOwn28Lpl_A= #=zqqEPvAA=)
à #=zL4KuW__dIXbC_RpQMjktpltiB5$1.#=zlV23NS0ONJn3uLgn_A==(List1 #=zsri_0nk=) à #=zD2MwcQJQNryUO9Cq7XRRll54kXj7geeOwQ==.#=zMDjUkg83nUQH(List1 #=zUGwlkK26x7xW, Stream #=zf6NYEo1GmKla, PptxSaveOptions #=zqqEPvAA=)
à #=zD2MwcQJQNryUO9Cq7XRRll54kXj7geeOwQ==.#=zV$ZOgkQ=(Document #=zQ9ilHsc=, Stream #=zf6NYEo1GmKla, PptxSaveOptions #=zqqEPvAA=)
à Aspose.Pdf.Document.#=z$pPN3ZN6lVbB(Stream #=zWZc60Tu5ajiE, SaveOptions #=zqqEPvAA=)
à Aspose.Pdf.Document.#=z$pPN3ZN6lVbB(String #=zUbtl7rocKtHR, SaveOptions #=zqqEPvAA=)
à Aspose.Pdf.Document.Save(String outputFileName, SaveOptions options)
à EasyPPTNormalizer.Form1.ToPPTX(String pdf, String ppt) dans D:\Leni\Sources\Git\EasySuiteV2\EasyPPT\EasyPPTNormalizer\Form1.cs:ligne 431

another file with same exception:

and another:

thank you

@pcaillol,

I tested it, and I replicated the problem. I will create a ticket for the dev team.

@pcaillol
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): PDFNET-54034

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

thank you for everything ! i keep on chasing bugs. cheers.