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ultralytics/utils/errors.py

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+# Ultralytics YOLO 🚀, AGPL-3.0 license
+
+from ultralytics.utils import emojis
+
+
+class HUBModelError(Exception):
+    """
+    Custom exception class for handling errors related to model fetching in Ultralytics YOLO.
+
+    This exception is raised when a requested model is not found or cannot be retrieved.
+    The message is also processed to include emojis for better user experience.
+
+    Attributes:
+        message (str): The error message displayed when the exception is raised.
+
+    Note:
+        The message is automatically processed through the 'emojis' function from the 'ultralytics.utils' package.
+    """
+
+    def __init__(self, message="Model not found. Please check model URL and try again."):
+        """Create an exception for when a model is not found."""
+        super().__init__(emojis(message))