Complex signal mismatch in three phase OLTC in simulink

I have made Kundur 10 bus system model in simulink and one of its component is three phase OLTC regulting transformer. While running the simulation, i get the following error:

Complex signal mismatch. Output port 1 of 'kundur_10bus_basic/Three-Phase OLTC Regulating Transformer (Phasor Type)/Current Sources/I1_abc' is a signal of numeric type complex. However, it is driving a signal of numeric type real

Component:Simulink | Category:Modelerror

Complex signal mismatch. Input port 1 of 'kundur_10bus_basic/Three-Phase OLTC Regulating Transformer (Phasor Type)/Current Sources/Gain4' expects a signal of numeric type real. However, it is driven by a signal of numeric type complex

Component:Simulink | Category:Modelerror

I have attached the file here. Is there any solution ?