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@@ -3485,7 +3485,7 @@ class PowerFeedForm(BootstrapMixin, CustomFieldForm):
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super().__init__(*args, **kwargs)
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# Initialize site field
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- if self.instance and self.instance.power_panel:
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+ if self.instance and hasattr(self.instance, 'power_panel'):
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self.initial['site'] = self.instance.power_panel.site
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