Update interface.js

interface.js

@@ -1,6 +1,8 @@
 // interface.js
 // ==============================
 
+alert('interface.js loaded!');
+
 const currentScriptTag = document.currentScript;
 
 (async function() {
@@ -196,10 +198,15 @@ const currentScriptTag = document.currentScript;
   // 7. Dynamically load viewer.js
   let viewerModule;
   try {
-    viewerModule = await import('https://mikafil-viewer-gs.static.hf.space/viewer.js');
-    await viewerModule.initializeViewer(config, instanceId);
+      alert('interface.js: about to import viewer.js');
+      viewerModule = await import('https://mikafil-viewer-gs.static.hf.space/viewer.js');
+      alert('interface.js: viewer.js imported, about to call initializeViewer');
+      await viewerModule.initializeViewer(config, instanceId);
+      alert('interface.js: initializeViewer called');
   } catch (err) {
-    return;
+      alert('interface.js: error importing viewer.js: ' + (err.message || err));
+      console.error(err);
+      return;
   }
 
   const canvasId = 'canvas-' + instanceId;