Fatal error when importing documents

I tried to import a document but I got this fatal error which I do not understand:


Could you help me figure out the issue here please ?

Hey there, welcome to the community.

  • What type of field is content?
  • What changes did you make to this field before importing it?

Hello, thanks for your reply.

The content field contains all the slices.

I wrote a script to migrate the content of an old slice to a new one. It worked for all pages except for this one. By looking at the document, I do not see any obvious mistake, so I was hoping someone could help me understand the error message.

We're going to try to reproduce the error.
Can you send us the entire zip file you're trying to import and the JSON of your Custom Type?