fix(jslib): 🧑‍💻 better error messages for api/query

tools/upend_js/api.ts

@@ -73,6 +73,13 @@ export class UpEndApi {
             keepalive: true,
           })
             .then(async (response) => {
+              if (!response.ok) {
+                reject(
+                  `Query ${queryStr} failed: ${response.status} ${
+                    response.statusText
+                  }: ${await response.text()}}`
+                );
+              }
               resolve(new UpListing(await response.json()));
               this.inFlightRequests[queryStr] = null;
             })