TypeError: Cannot read property 'findById' of undefined
   at /mnt/huben-disk/code/keju-www/controllers/web/pay.js:189:15
   at Layer.handle [as handle_request] (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/layer.js:95:5)
   at next (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/route.js:137:13)
   at Route.dispatch (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/route.js:112:3)
   at Layer.handle [as handle_request] (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/layer.js:95:5)
   at /mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:281:22
   at param (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:354:14)
   at param (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:365:14)
   at Function.process_params (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:410:3)
   at next (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:275:10)
   at Function.handle (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:174:3)
   at router (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:47:12)
   at Layer.handle [as handle_request] (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/layer.js:95:5)
   at trim_prefix (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:317:13)
   at /mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:284:7
   at Function.process_params (/mnt/huben-disk/code/keju-www/node_modules/express/lib/router/index.js:335:12)