Expected behavior Trying to implement MDBPro in nextjs

Actual behavior The first time you add MDBSideNav, it appears on the screen. However, if you clear the cache and load the screen again, an error will occur.

Resources (screenshots, code snippets etc.)

I referenced the "https://mdbootstrap.com/articles/react/materialize-your-next-js-project-with-mdbootstrap-for-react/" document provided by this site and was applying MDBPro.

Here is the layout.js I have made of the document.

import Link from 'next/link';

import { MDBInput, MDBNavbar, MDBNavbarNav, MDBNavItem, MDBNavLink, MDBDropdown, MDBDropdownToggle, MDBDropdownMenu, MDBDropdownItem, MDBIcon, MDBSideNavItem, MDBSideNavCat, MDBSideNavNav, MDBSideNav, MDBContainer, MDBNavbarBrand,MDBNavbarToggler,MDBCollapse,MDBFormInline, } from "mdbreact";

class Layout extends React.Component { constructor(props) { super(props); this.state = { isOpen: false, toggleStateA: false, breakWidth: 1300, windowWidth: 0 }; }

handleResize = () => {}

componentDidMount = () => { this.handleResize() window.addEventListener("resize", this.handleResize) }

componentWillUnmount = () => { window.removeEventListener("resize", this.handleResize) }

handleResize = () => { const windowWidth = window.innerWidth this.setState({windowWidth }) }

toggleCollapse = () => { const isOpen = !this.state.isOpen this.setState({ isOpen }); }

handleToggleClickA = () => { const toggleStateA = !this.state.toggleStateA this.setState({toggleStateA}) }

render = () => { const {windowWidth, breakWidth} = this.state

const navStyle = {
  paddingLeft: windowWidth > breakWidth ? "210px" : "16px"
}

const mainStyle = {
  margin: "0 6%",
  paddingTop: "5.5rem",
  paddingLeft: windowWidth > breakWidth ? "240px" : "0"
}

const specialCaseNavbarStyles = {
  WebkitBoxOrient: "horizontal",
  flexDirection: "row"
}

return (
  <React.Fragment>
    <div className="fixed-sn light-blue-skin">
    <MDBSideNav
        logo="https://mdbootstrap.com/img/logo/mdb-transparent.png"
        breakWidth={this.state.breakWidth}
        bg="https://mdbootstrap.com/img/Photos/Others/sidenav4.jpg"
        mask="strong"
        fixed
    >

    </MDBSideNav>
    <main style={mainStyle}>
        <MDBContainer fluid style={{ height: 2000 }} className="mt-5">
          {this.props.children}
        </MDBContainer>
      </main>      
    </div>
  </React.Fragment>
);

} }

export default Layout;