Appwork Notification to IOS issue

i try to use Notification Test in Appwork Gateway  to  send the notification manually  to my phone ( android & iphone )

i can send to Android properly  but  can not send to IOS ,  then i checked the logs and i got this   

so , can you suggest me for this case 
by the way the information for my phone is 
Iphone 11 Pro Max
IOS Version : 13.6

and  Appwork Gateway version 

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