Update bot.py

bot.py

@@ -67,8 +67,11 @@ plugin_dicts: Dict[str, Dict[str, MangaClient]] = {
 }
 
 cache_dir = "cache"
-if os.path.exists(cache_dir):
-    shutil.rmtree(cache_dir)
+try:
+    if os.path.exists(cache_dir):
+        shutil.rmtree(cache_dir)
+except PermissionError:
+    print(f"Warning: Could not remove {cache_dir} due to permissions.")
 with open("tools/help_message.txt", "r") as f:
     help_msg = f.read()