title: Strange command line when opening terminal, after downloading flutter
body: <p>I downloaded flutter yesterday (03/07/21). Today, when I opened Terminal, I got this:</p>
  <blockquote>
  <p>Last login: Mon Mar  8 08:52:28 on ttys000
  /Users/mateusoliveira/.zshrc:1: /Users/mateusoliveira/Developer/flutter/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/mateusoliveira/Developer/flutter/bin:/Library/Apple/usr/bin:$PATH:Users/mateusoliveira/Developer/flutter/bin:Users/mateusoliveira/Developer/flutter/bin not found
  mateusoliveira@MacBook-Pro-de-mateus ~ %</p>
  </blockquote>
  <p>What is it referring to?
  How to fix it?</p>