Error 400 when exporting to PDF

#1

Hi,

I am trying to convert to PDF (using pandoc) a Markdown file which contains a link to picture stored in my Google Photos:

![whatever image description](//stackedit-community-upload.s3.dualstack.us-east-> 1.amazonaws.com/original/1X/de33c32e09f877ebf41bc7d7fbad8873c4f9320a.png)

Without this link, the export function works just fine. What could cause this problem?