add try except for icons that do not have fill

src/utils/icon.py

@@ -67,8 +67,12 @@ class Icon:
         with open(icon_path, "rb") as file:
             icon = file.read()
         cicon = str(icon)
-        fill = re.search(r"fill=\"(.*?)\"", cicon).group(1)
-        icon = icon.replace(fill.encode(), config.color.encode())
+        try:
+            fill = re.search(r"fill=\"(.*?)\"", cicon).group(1)
+        except AttributeError:
+            fill = None
+        if fill:
+            icon = icon.replace(fill.encode(), config.color.encode())
         return icon