fix: remove layer report error when no layer

bl_operator/ops_gp_basic.py

@@ -47,7 +47,8 @@ def poll(cls, context):
     def execute(self, context):
         nt: bpy.types.NodeTree = context.space_data.edit_tree
         gp_data: bpy.types.GreasePencil = nt.grease_pencil
-        if not gp_data: return {'CANCELLED'}
+        if not gp_data:
+            return {'CANCELLED'}
         with BuildGreasePencilData(gp_data) as gp_data_builder:
             if SelectedGPLayersRuntime.selected_layers():
                 for layer in SelectedGPLayersRuntime.selected_layers():

model/model_gp.py

@@ -222,11 +222,12 @@ def remove_active_layer(self) -> 'BuildGreasePencilData':
 
     def remove_layer(self, layer_name_or_index: str | int) -> 'BuildGreasePencilData':
         """Remove the grease pencil annotation layer."""
-        if not (layer := self._get_layer(layer_name_or_index)): return self
-
-        index = self.gp_data.layers.find(layer.info)
-        self.gp_data.layers.remove(layer)
         try:
+            if not (layer := self._get_layer(layer_name_or_index)): return self
+
+            index = self.gp_data.layers.find(layer.info)
+            self.gp_data.layers.remove(layer)
+
             next_layer = self.gp_data.layers[index - 1]
             if not self.edit_layer.is_in_2d(next_layer):
                 self.edit_layer.display_in_3d(next_layer)