Cannot read properties of null (reading 'parent')

[jaker-dotcom]

Describe the bug
Don't know since when but everytime I sync I get this:

This also happens when not adding the boken math cloze (i.e. if it's the unique change)

When hitting sync it looks like this:

I saw that there is an issue with similar name but it was just clozed down w/o any info on how I could solve it myself.

Steps to Reproduce:
I don't know where it comes from, I searched all blocks containing the sequence ':->' but none seemed suspicious to me.

Expected behavior
... well no error at all or if there is an issue with a block, then instructions on how to find it

Developer console screenshot:
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Device Information (please complete the following information):

• OS with version: PopOS! 22.04 LTS
• Logseq Anki Sync Plugin Version: [e.g. 0.3.3]
• Anki Version: 24.06.03
• AnkiConnect Addon Version: 6.4.0
• Logseq Version: 0.10.9