Error: attempting to reference a deleted function

[himajin100000]

himajin100000 here!

I've updated my Visual Studio to version 16.0.0 Preview 4.3 and I am 
encountering an error. I'm not good at C++. I hope someone helps me.

C:\PROGRA~2\MIB055~1\2019\Preview\VC\Tools\MSVC\14.20.27508\Include\list(1010): 
error C2280: 'std::pair<_Kty,_Ty> &std::pair<_Kty,_Ty>::operator 
=(volatile const std::pair<_Kty,_Ty> &)': attempting to reference a 
deleted function
with
[
_Kty=vcl::ControlTypeAndPart,
_Ty=std::shared_ptr<vcl::WidgetDefinitionPart>
]
C:\PROGRA~2\MIB055~1\2019\Preview\VC\Tools\MSVC\14.20.27508\Include\utility(177): 
note: see declaration of 'std::pair<_Kty,_Ty>::operator ='
with
[
_Kty=vcl::ControlTypeAndPart,
_Ty=std::shared_ptr<vcl::WidgetDefinitionPart>
]
C:\PROGRA~2\MIB055~1\2019\Preview\VC\Tools\MSVC\14.20.27508\Include\utility(177): 
note: 'std::pair<_Kty,_Ty> &std::pair<_Kty,_Ty>::operator =(volatile 
const std::pair<_Kty,_Ty> &)': function was explicitly deleted
with
[
_Kty=vcl::ControlTypeAndPart,
_Ty=std::shared_ptr<vcl::WidgetDefinitionPart>
]