Added error handling.

Replaced icon

manifest.json

@@ -1,7 +1,7 @@
 {
   "action": {
     "default_popup": "popup/popup.html",
-    "default_icon": "popup/icon.png"
+    "default_icon": "popup/LeafLLM.png"
   },
   "content_scripts": [
     {
@@ -11,9 +11,9 @@
   ],
   "description": "LLM-based tools for Overleaf",
   "icons": {
-    "16": "popup/icon_16.png",
-    "48": "popup/icon_48.png",
-    "128": "popup/icon_128.png"
+    "16": "popup/LeafLLM_16.png",
+    "48": "popup/LeafLLM_48.png",
+    "128": "popup/LeafLLM_128.png"
   },
   "commands": {
     "Complete": {