title: fatal error file not found /Lexical preprocessor error IOS
body: <p>I have a project deployed on the appstore(everything ok),which after 2 months on running source code gives me crazy errors.</p>
  
  <p>what i tried</p>
  
  <blockquote>
    <p>Build settings->  set YES to Always search user paths </p>
  </blockquote>
  
  <p>Not working</p>
  
  <p>Please provide some suggestions.I think i need to chang some thing in build settings.Do anyone know  why this is happening?</p>
  
  <p><img src="https://i.stack.imgur.com/nRXjd.png" alt="enter image description here"></p>