Jul 26, 2017 · 1 min read
Looks like you didn’t set up any initial state. Make sure to do so in your constructor
constructor(props) {
super(props); this.state = { seconds: 0 };}
Looks like you didn’t set up any initial state. Make sure to do so in your constructor
constructor(props) {
super(props); this.state = { seconds: 0 };}
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