Thanks Phil. I don´t know what the query is either, I just copy/pasted the file into Obsidian. I know that Marked2 parses it correctly, but Obsidian doesn't seem to. It must be just my Obsidian as I would expect others to have the same problem, but no-one seems to.
It is not “just your Obsidian”. The problem (if you call it that) is, that the Community Plugin “DataView” interprets the “=” of the “=>” as the beginning of an inline query, which is a kind of “show me all the notes, that have these contraints” request. It seems you are not using these inline query so you should be fine to change the “Inline Query Prefix” in the options for DataView to something like “==” instead of “=”.