after installing yarn, I want to create a project through create-react-app bikemanager, but I always report an error. I don"t know what went wrong. Please give me some advice. Thank you 
  
 
 after installing yarn, I want to create a project through create-react-app bikemanager, but I always report an error. I don"t know what went wrong. Please give me some advice. Thank you 
  
 
 execute  yarn install  
 or use  npm I