- 🇨🇦Canada ryanrobinson_wlu
I encountered this error and will add a note here in case anybody else has the same cause as I did.
I created a new data export display on a view, where the other displays were pages and blocks, using the +Add -> Data Export link. I set up my view including the path with the .csv in the filename, then kept getting the error.
Then I discovered in Format -> Format -> Settings there is also an option there to set the accepted request format. That also needs to be set to csv.