In our store we have digital products, books in pdf for example. To associate the pdf document to the product we go to "Downloads" and try to upload the file but we get error, mentioned below:
SyntaxError: Unexpected token <in JSON at position 0
We have tried several types of .jpg and .png files but the same error appears, we have created a folder called "download" "upload" and "downloads" in case the container folder is not present and the same error is still appears.
Thanks in advance