Handle buyer errors

Buyer checkout error

If an error prevents buyer checkout, alert the user that an error has occurred with the buttons using the onError callback:

1paypal.Buttons({
2onError:function(err){
3// For example, redirect to a specific error page
4window.location.href="/your-error-page-here";
5}
6}).render('#paypal-button-container');

This error handler is a catch-all. Errors at this point are not expected to be handled beyond showing a generic error message or page.

Script not loading error

If null pointer errors prevent the script from loading, provide a different checkout experience:

1if(window.paypal&&window.paypal.Buttons){
2// render the buttons
3}else{
4// show a fallback experience
5}