Alternative simpler work around with different behaviour.

This work around is simpler but with less desirable features:

 * Generates red error output in console on first run.
   (But doesn't prevent plugin from loading.)

 * Doesn't display the custom type icon on first run only generic.
   (But the custom types can still be interacted with.

addons/godot-camera-plugin.funabab/plugin.gd

@@ -5,14 +5,7 @@ const ANDROID_MODULE = "org/godotengine/godot/funabab/camera/FunababCameraPlugin
 const CUSTOM_NODE_NAME = "CameraView";
 
 func _enter_tree():
-	var custom_icon: Image = Image.new()
-	custom_icon.load("res://addons/godot-camera-plugin.funabab/icon_node.png")
-
-	var custom_icon_texture: ImageTexture = ImageTexture.new()
-	custom_icon_texture.create_from_image(custom_icon)
-
-	add_custom_type(CUSTOM_NODE_NAME, "Control", preload("camera_view.gd"), custom_icon_texture);
-	pass
+	add_custom_type(CUSTOM_NODE_NAME, "Control", preload("camera_view.gd"), ResourceLoader.load("res://addons/godot-camera-plugin.funabab/icon_node.png"))
 
 func _exit_tree():
 	remove_custom_type(CUSTOM_NODE_NAME);