Code
T4101 query-not-pure
A query read a clock, drew a random number or reached the network while it ran.
Details
A query answers the same for the same data: that is what lets a page watch it. While the run of a query runs, and while the arrow of a rule runs, the engine swaps the clock, the random source and fetch of the runtime for ones that fail with this code: Date.now(), new Date() with nothing handed, Math.random(), the random bytes and ids of crypto, and fetch. random() and token() fail the same way there, in a body that was read too. A moment that is made from a number, a text or its parts is no clock, and works. The check finds most of these before the app runs (code.T4001, code.T4002, code.T4003).
The fix
Read the time from the now that the query is handed. Draw and reach out in an action, or in a change where the value must be kept, and hand the query what it needs as its input.