app.js:18171 [Vue warn]: Property or method "artist" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option.
(found in <Root>)
warn @ app.js:18171
app.js:18171 [Vue warn]: Error in render function: "TypeError: Cannot read property 'firstName' of undefined"
(found in <Root>)
warn @ app.js:18171
app.js:18258 TypeError: Cannot read property 'firstName' of undefined
at Proxy.eval (eval at createFunction (app.js:27504), <anonymous>:7:580)
at Vue$3.Vue._render (app.js:21809)
at Vue$3.updateComponent (app.js:20228)
at Watcher.get (app.js:20569)
at new Watcher (app.js:20558)
at mountComponent (app.js:20232)
at Vue$3.$mount (app.js:25540)
at Vue$3.$mount (app.js:27743)
at Vue$3.Vue._init (app.js:21913)
at new Vue$3 (app.js:21998)
It appears that the demo at http://vue-table-component.spatie.be/ is broken.