Fix bug which downloaded only the first file in a folder

major_projects_grabber/major_projects_grabber.py

@@ -128,8 +128,8 @@ def download_document(url, document_path):
     # Create output directories as required
     os.makedirs(os.path.dirname(document_path), exist_ok=True)
 
-    # Check if file exists
-    if os.path.isfile(document_path):
+    # Check if a non-empty file exists
+    if os.path.isfile(document_path) and os.path.getsize(document_path) > 0:
         pass
     else:
         try: