Please help exporting to 3MF file

Every time I try to export the model with the 3mF addon and get an error. Only happen when the object has texture or an image. I am using the addon found online. Not sure if there is a another way to do this.

wouldn’t it make more sense to contact the addon developer directly and ask them for some help rather than asking a bunch of random strangers to fix someone else’s code?

Yes, that could be true but that only applies when the addon creator can be reached.