The given key was not present in the dictionary.

Hi Team,

WhenI doing a doclib migration, using the Generating document context, I am getting the Issue "The given key was not present in the dictionary." Along with PDF file names, filename contains special characters like spaces, hypen, & etc., NOt sure what is the root cause for this. Is there something I need to check in the attachment mapping?

Please advise

Thanks,

Kannan