sourceMappingURL' are deprecated

Hi,

I see this message in chrome inspect element and wondering how to fix it.

‘//@ sourceURL’ and ‘//@ sourceMappingURL’ are deprecated, please use ‘//# sourceURL=’ and ‘//# sourceMappingURL=’ instead.

https://wordpress.org/plugins/standard-widget-extensions/