I just got this:

Attribute [datasource] is required when attribute [dbtype] is not [query] and no default datasource is defined

However my

this.datasource

is set in Application.cfc. And my CF2021 instance using the same codebase is running the code fine. The error goes on to say:

you can define a default datasource as attribute [defaultdatasource] of the tag cfapplication or as data member of the Application.cfc (this.defaultdatasource="mydatasource";)

But it shouldn't be

defaultdatasource

. That's not a thing. It should just be

datasource

. And indeed this is what we use all day, every day in our production code. Granted this is on a different Lucee instance that @ work, but it's always been

this.datasource

, has it not?

Lucee 5.3.9.166

.