@Ashok Kumar T thank you for raising these issues - we'll make the error message cleaner and explicitly point to flexible python runtime configuration as the likely culprit.

Ah, the classic w "</"_script>"...

("The classic" is how it seems ChatGPT responds to every error/oddity I give it these days, but in this case it's actually a classic.)

Maybe look into using %CSP.REST to serve up the data.

Fair enough! I've set a calendar reminder to come back here in 6 months and a year and see whether the article as a whole has aged like wine or milk.