crash with AdmobAdvancedNativeContent

[waleednour]

i facing many crashs with this AdmobAdvancedNativeContent
Fatal Exception: NSInvalidArgumentException
NSLayoutConstraint for (null): Constraint must contain a first layout item

Fatal Exception: NSInvalidArgumentException
0 CoreFoundation 0x18828186c __exceptionPreprocess
1 libobjc.A.dylib 0x19d29cc50 objc_exception_throw
2 CoreAutoLayout 0x19d563bb0 ResolveConstraintArguments
3 CoreAutoLayout 0x19d563c24 +[NSLayoutConstraint constraintWithItem:attribute:relatedBy:toItem:attribute:multiplier:constant:]
4 liaqa 0x1012b2818 -[AdmobAdvancedNativeContent adLoader:didReceiveUnifiedNativeAd:] + 567 (AdmobAdvancedNativeContent.m:567)
5 liaqa 0x1010373bc __destroy_helper_block_e8_32s40s48s56r64w
6 liaqa 0x101036580 __destroy_helper_block_e8_32s40s48s56r64w
7 libdispatch.dylib 0x187e7424c _dispatch_call_block_and_release
8 libdispatch.dylib 0x187e75db0 _dispatch_client_callout
9 libdispatch.dylib 0x187e837ac _dispatch_main_queue_callback_4CF
10 CoreFoundation 0x1881fd11c CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE
11 CoreFoundation 0x1881f7120 __CFRunLoopRun
12 CoreFoundation 0x1881f621c CFRunLoopRunSpecific
13 GraphicsServices 0x19fdc2784 GSEventRunModal
14 UIKitCore 0x18ac36ee8 -[UIApplication _run]
15 UIKitCore 0x18ac3c75c UIApplicationMain
16 liaqa 0x100477324 main + 123 (AppDelegate.swift:123)
17 libdyld.dylib 0x187eb66b0 start