SDK 15.2 and Mesh 3.0 , Problem with DFU mesh generate hex version of device page

[markson]

Hi all, 

I'm following https://www.nordicsemi.com/DocLib/Content/SDK_Doc/Mesh_SDK/v3-0-0/md_doc_getting_started_dfu_quick_start  and I'm using mesh SDK v3.0.0, I have a problem in step 4 where I need to generate a hex version of device page.I did this 

There is a value error and I don't know why it doesn't generate device page , help please

Thanks.

[Simon]

I have not encountered this error before, but it seems like there is something wrong with the Python JSON library. What happens if you use Python 3 instead?

Best regards,

Simon

[markson]

Hi Simon, thanks for replying my question. But when i use the python3, i get the same result as the python2.