How to solve this warning issue " Invalid MaskType 'Universal Bridge' in 'driveGuiManager" ?

I want to edit the AC3 drive, Field-Oriented Control Induction Motor Drive, model by deleting the "Three-phase diode rectifier" so I can connect it directly to a battery. I disabled the link to the library then went to "Look under the mask" and modified it as the picture below

It's working fine, but I keep getting the following warning

Can anyone tell me how to solve this?

Thanks!