ios - Error : Define -DNS_BLOCK_ASSERTIONS=1 in Project settings? -


I am trying to create a svg file rendering demo. I am getting the following error that I can not understand.

error image 1

I have read the following answers.

but DNS_BLOCK_ASSERTIONS = 1

Enter image details here

Look at the code. Lines: 

  #if! NS_BLOCK_ASSERTIONS #Terror & lt; Error message & gt; #endif   
 Checks to see if the  NS_BLOCK_ASSERTIONS  macro is defined or not You are getting the error because  NS_BLOCK_ASSERTIONS  has not been set. The message after  #error  is telling you how to fix the problem.  
 Once you define  NS_BLOCK_ASSERTIONS  in the "Other C Flag" building settings, the problems will go away.

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