Clash Royale CLAN TAG#URR8PPP

Warning: Prop `className` did not match. when using styled compoenents with semantic-ui-react

I use this code to margin my Button from top:

const makeTopMargin = (elem) =>
return styled(elem)`
&&
margin-top: 1em !important;

`;


const MarginButton = makeTopMargin(Button);


and whenever i use MarginButton node, I get this error: Warning: PropclassNamedid not match. Server: "ui icon left labeled button sc-bwzfXH MjXOI" Client: "ui icon left labeled button sc-bdVaJa fKCkqX"

MarginButton

Warning: Prop

did not match. Server: "ui icon left labeled button sc-bwzfXH MjXOI" Client: "ui icon left labeled button sc-bdVaJa fKCkqX"

You can see this produced here.

What should I do?

1 Answer
1

PropType errors are runtime errors that will let you know that the data expected being passed to a prop is not what is expected. It looks like the className prop that is being set on your component is not the same when the component is rendered on the server and when it is then rendered in the client's DOM.

Since it looks like you are using server side rendering, you need to make sure that your class names are deterministic. That error is showing you the class that is being created by your styled-components library on the server and how it is different from the DOM. For libraries that do not normally have deterministic class names, you need to look at advanced configurations. Take a look at the styled-components documentation regarding specificity as it pertains to SSR.

styled-components

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