'Export to markdown' on extracted annotations not working

[DitDotz]

Describe the bug
'Export to markdown' on extracted annotations not working.

To Reproduce
Steps to reproduce the behavior:

1. Clicked 'Export to markdown' on extracted annotations

2. See error in debug output logging:
   SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data noteToMarkdown@chrome://mdnotes/content/mdnotes.js:362:14 getZoteroNoteFileContents@chrome://mdnotes/content/mdnotes.js:733:14 exportToMarkdownMenu@chrome://mdnotes/content/mdnotes.js:1030:26

Expected behavior
To have extracted annotations converted to markdown file at specified location

Desktop (please complete the following information):

• OS: Windows 10
• Zotero version: [5.0.96.3]
• Mdnotes version: [0.1.3]
• Zotfile version: [5.1.0]
• BetterBibtex version: [6.1.10]

[FeralFlora]

I am experiencing the same bug using Zotero beta 6.0.9-beta.6+b215d93ac.

[Longyichen]

yes，same bug in zotero 6.0.23 + mdnotes 0.2.3

[wuc9521]

exactly same problem