php errors

Hi,

I’m getting this error in console:

query-monitor.js?ver=1545590151:314 {type: "deprecated", message: "Function create_function() is deprecated", file: "wp-content/plugins/you-have-a-new-message/you-have-a-new-message.php", line: 19, stack: Array(1),?…}

Any suggestions on how to resolve this?

Thanks for any help!