[Vuejs]-[Vue warn]: Error in render: "TypeError: Cannot read property 'BTC' of undefined"

If you add a v-if on the span element the error should go away.

The if should only check coins.DISPLAY as going further down the chain will generate the same error.

<span class="price" v-if="coins.DISPLAY">{{ coins.DISPLAY.BTC.USD.PRICE }}</span>

Here’s a fiddle with a complete example.