title: Index out of bounds on NSString
body: <p>This is my Log...</p>
  
  <p><strong>* Terminating app due to uncaught exception 'NSRangeException', reason: '*</strong> -[__NSCFConstantString substringToIndex:]: Range or index out of bounds'</p>
  
  <p>i don't know what to do...
  can anyone help me what is wrong?</p>