def render_component(self) -> Component:
        """Render the component.

        Raises:
            ValueError: If the render function takes more than 2 arguments.
            ValueError: If the render function doesn't return a component.

        Returns:
            The rendered component.
        """
        # Import here to avoid circular imports.
        from reflex.compiler.compiler import _into_component_once
        from reflex.components.base.fragment import Fragment
        from reflex.components.core.cond import Cond
        from reflex.components.core.foreach import Foreach

        # Get the render function arguments.
        args = inspect.getfullargspec(self.render_fn).args
        arg = self.get_arg_var()
        index = self.get_index_var()

        if len(args) == 1:
            # If the render function doesn't take the index as an argument.
            component = self.render_fn(arg)
        else:
            # If the render function takes the index as an argument.
            if len(args) != 2:
                msg = "The render function must take 2 arguments."
                raise ValueError(msg)
            component = self.render_fn(arg, index)

        # Nested foreach components or cond must be wrapped in fragments.
        if isinstance(component, (Foreach, Cond)):
            component = Fragment.create(component)

        component = _into_component_once(component)

        if component is None:
            msg = "The render function must return a component."
            raise ValueError(msg)

        # Set the component key.
        if component.key is None:
            component.key = index

        return component
Render the component.

        Raises:
            ValueError: If the render function takes more than 2 arguments.
            ValueError: If the render function doesn't return a component.

        Returns:
            The rendered component.
        
reflex/components/tags/iter_tag.py