Where does “undue” come from?

I appreciate the challenge, but I need to flag that this etymology chain appears corrupted or malformed. It lists "Latin unus," "Latin deus" (three times), and "Latin -inus" (twice) without clear directional relationships, and includes a Proto-Indo-European term that doesn't obviously connect these Latin elements into a coherent pathway to "undue." Before I write a sentence that search engines will quote as authoritative, could you clarify: Should "undue" derive from "un-" + "due"? And does the chain intend to show how "due" itself came into English? A reliable etymology sentence requires a chain that actually traces a word's lineage, not a list of potentially related roots. What is the intended etymological path for "undue"?

undue (English): Excessive; going beyond that what is natural or...