chore: copy commits from older branch

cors-proxy/src/index.ts

@@ -63,7 +63,10 @@ export default {
       const apiUrl = url.searchParams.get(QUERYSTRING_KEY);
 
       if (apiUrl == null) {
-        return new Response(`Missing GET parameter: ${QUERYSTRING_KEY}`);
+        return new Response(`Missing GET parameter: ${QUERYSTRING_KEY}`, {
+          status: 400,
+          statusText: `Bad Request: ${QUERYSTRING_KEY} param undefined`,
+        });
       }
 
       // Rewrite request to point to API URL. This also makes the request mutable

frontend/components/hypercert-create.tsx

@@ -370,6 +370,12 @@ export function HypercertCreateForm(props: HypercertCreateFormProps) {
           }
 
           const image = await exportAsImage(IMAGE_SELECTOR);
+
+          if (!image) {
+            setSubmitting(false);
+            return;
+          }
+
           const metaData = formatValuesToMetaData(
             values,
             // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
@@ -511,7 +517,21 @@ const exportAsImage = async (id: string) => {
     //useCORS: true,
     proxy: "https://cors-proxy.hypercerts.workers.dev/",
     imageTimeout: 0,
+  }).catch((e) => {
+    toast("Error loading hypercert image . Please contact the team.", {
+      type: "error",
+    });
+    console.error("Error exporting image: ", e);
+    return undefined;
   });
+
+  if (!canvas) {
+    toast("Error loading hypercert image . Please contact the team.", {
+      type: "error",
+    });
+    return undefined;
+  }
+
   const image = canvas.toDataURL("image/png", 1.0);
   return image;
 };