title: How to solve this error "avrdude: error reading signature data, rc=-67"?
body: <p>I am using Arduino Uno WiFi.</p>
  
  <p>At first, the sketches were successfully uploading on the board.</p>
  
  <p>Then, I started getting the following error without changing anything in the code:</p>
  
  <p><img src="https://i.stack.imgur.com/QjejT.png" alt="error in the image"> </p>
  
  <p>Is it a hardware problem, or the board is broken?</p>
  
  <p>Any Help? </p>