Application error: a client-side exception has occurred (see the browser console for more information)
Wrong Network
This may mean you are on the wrong network. Make sure your wallet is switched to Ethereum Mainnet, not any other network. Then try refreshing the page.
Extension interference
It could also be related to many extensions you have installed on your browser. Try disabling all extensions other than your wallet. Or, try a different browser altogether to see if that could be the issue.