Help with error in Cmmn

Hello everyone
I´m working in a model in CMMN and I have just received an error (see attached file). Now I can´t open the file neither online tool nor laptop tool. I tried with older file versions and they work but It seems something in the last changes cause the problem, the last action was to add a Stage and save changes and then I could not reopen the file.

I do not how to fix this problem, so I really appreciate your help.

Thank you so much

Attached you will find the file .cmmn and a image of the error

Diagrama de proceso de diseño SM -v1 311.cmmn (166.6 KB)

Hi @Nestor_Nova, could you share the xml of the file version right before this problem happened?

Hi @siffogh, this is the last functional version before the problem show up, After additional changes, i saved the file and when I tryed to reopen it the error appeared.

thank you for your help

Diagrama de proceso de diseño SM -v1 255.txt (169.4 KB)

@Nestor_Nova I am getting the same error with this file.

Hi @siffogh, this is the version of the day before the problem, this file open in my laptop normally (it has some warnings but it is working)

Diagrama de proceso de diseño SM -v1.txt (156.7 KB)