What is the current major cosmological quandary related to conflicting $H_0$ measurements called?

Answer

Hubble Tension.

The significant conflict between the expansion rate derived from the early universe (CMB) and that derived from local, late-time observations is known as the Hubble Tension.

What is the current major cosmological quandary related to conflicting $H_0$ measurements called?
astronomyuniversecosmologyexpansionHubble constant