Good day
Some context about why this referendum will fail:
About the expected failure
Unfortunately, the referendum was proposed to execute the Inline of the above preimage. However, Inline expects a call and not a preimage.
There are three variants to define a proposal on chain: Inline , Legacy and Lookup . The former expects the exact call and thus does not require the registration of a preimage beforehand. The latter two expect a preimage hash.
Best.