Converting .md to .docx via pandoc - error YAML Tab

Hello,

I am trying to convert a .md document to .docx via Try pandoc! . It usually works but for some reason after applying a few changes in the document, pandoc gives me the following error: YAML parse exception at line 3, column 0, while scanning a plain scalar: found a tab character that violate indentation

I already tried deleting the first few lines, as the error is supposed to be in line 3, but it still did not work.

Now, according to the obsidian I have the frontmatter enabled and showing, but I dont seem to have any - so the error cant be there? I attached a screenshot …

I myself have no idea about YAML etc., so I am just trying to take a shot in the dark…

Thank you for your help!