title: How to get the information from 'first throw call stack' in Xcode
body: <p>I got a crash from my client，As shown below
  <a href="https://i.stack.imgur.com/0qFX8.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/0qFX8.jpg" alt="enter image description here"></a></p>
  
  <p>How can I figure out where the problem is from this picture？
  How to get information from this? 
  What does '+1036' mean behind '[__NSDictionaryM setObject:forKey:]'?</p>