dyld: Symbol not found: _MTLTextureDescriptorClass

when i trying to run my app on device i have this error Thread 1: signal SIGABRT

with this message

dyld: Symbol not found: _MTLTextureDescriptorClass

Referenced from: /var/containers/Bundle/Application/338EBE3D-9982-4D48-8295-5C4C5E6E754B/***.app/XXXX

Expected in: flat namespace

in /var/containers/Bundle/Application/338EBE3D-9982-4D48-8295-5C4C5E6E754B/***/XXXX

(lldb)

any solution ??

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_MTLTextureDescriptorClass
, with or without the underscore, isn’t an Apple type. 
MTLTextureDescriptor
is, making me think that something in your program is using the wrong name, or perhaps algorithmically deriving the former from the latter but not doing it correctly.

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