I think you’re running into the issue with the v1 modules served by Observable’s API described in these threads.
The recommended solution is to switch to using the V3 runtime. I think changing the script in your HTML file to the following should work (not tested!):
import {Runtime, Inspector} from "https://cdn.jsdelivr.net/npm/@observablehq/runtime@4/dist/runtime.js";
import notebook from "https://api.observablehq.com/d/d1345cfb039d5b19.js?v=3";
const renders = {
"viewof value": "#labels",
};
for (let i in renders)
renders[i] = document.querySelector(renders[i]);
const runtime = new Runtime();
const main = runtime.module(define, name => {
if (renders[name]) {
return new Inspector(renders[name]);
}
});