凉了 : on client

Error: <html> <head><title>502 Bad Gateway</title></head> <body bgcolor="white"> <center><h1>502 Bad Gateway</h1></center> <hr><center>nginx/1.12.2</center> </body> </html> at /home/root/pm2/iShawnWang/source/Home/node_modules/wretch/dist/bundle/wretch.js:1:4813 at <anonymous> at process._tickCallback (internal/process/next_tick.js:118:7)