Did you download from here on Civ Fanatics or from the version on Steam?
Also if you are on PC can you please close out of the game completely, restart it, attempt to start the mod, and then browse to Documents\My Games\Sid Meier's Civilization VI\Logs and paste the contents of the file named Database.log?
I downloaded the most recent updated version from Civfanatics again today. I also tried the Steam Version yesterday. Still returning me to load screen.
[3071505.621] [Localization]: Validating Foreign Key Constraints...
[3071505.621] [Localization]: Passed Validation.
[3071505.627] [Configuration]: Validating Foreign Key Constraints...
[3071505.627] [Configuration]: Passed Validation.
[3071519.037] [FullTextSearch]: Initializing FullTextSearch
[3071519.424] [Gameplay]: Validating Foreign Key Constraints...
[3071519.433] [Gameplay]: Passed Validation.
[3071519.822] [Configuration]: Validating Foreign Key Constraints...
[3071519.822] [Configuration]: Passed Validation.
[3071759.215] [FullTextSearch]: FTS - Creating Context
[3071772.725] [FullTextSearch]: FTS - Creating Context
[3071783.997] [Configuration]: Validating Foreign Key Constraints...
[3071783.997] [Configuration]: Passed Validation.
[3071786.514] [Configuration]: Validating Foreign Key Constraints...
[3071786.514] [Configuration]: Passed Validation.
[3071800.308] [Gameplay] ERROR: FOREIGN KEY constraint failed
[3071800.308] [Gameplay] ERROR: FOREIGN KEY constraint failed
[3071800.308] [Gameplay]: Validating Foreign Key Constraints...
[3071800.309] [Gameplay] ERROR: Invalid Reference on Building_YieldChanges.BuildingType - "QUO_BUILDING_TEMPLO_MAYOR" does not exist in Buildings
[3071800.309] [Gameplay] ERROR: Invalid Reference on BuildingModifiers.BuildingType - "QUO_BUILDING_TEMPLO_MAYOR" does not exist in Buildings
[3071800.309] [Gameplay] ERROR: Invalid Reference on BuildingModifiers.BuildingType - "QUO_BUILDING_TEMPLO_MAYOR" does not exist in Buildings
[3071800.317] [Gameplay]: Failed Validation.
[3071800.343] [Gameplay]: Validating Foreign Key Constraints...
[3071800.354] [Gameplay]: Passed Validation.
[3071801.276] [FullTextSearch]: FTS - Creating Context
[3071801.364] [Configuration]: Validating Foreign Key Constraints...
[3071801.364] [Configuration]: Passed Validation.
[3071806.980] [FullTextSearch]: FullTextSearch - Shutting down