Attached are the errors that occurred in the browser console:
1) Uncaught TypeError: colorPicker.wpColorPicker is not a function
at SGPBBackend.colorPicker (Backend.js?ver=4.1.14:175:13)
at SGPBBackend.sgInit (Backend.js?ver=4.1.14:5:271)
at HTMLDocument.<anonymous> (Backend.js?ver=4.1.14:207:207)
at e (load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,hoverIntent,utils,regenerator-runtime,wp-polyfill,wp-hooks&ver=6.1.1:2:30038)
at t (load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,hoverIntent,utils,regenerator-runtime,wp-polyfill,wp-hooks&ver=6.1.1:2:30340)
2) Failed to load resource: the server responded with a status of 500 ()
Present warning:
1) jQuery.Deferred exception: colorPicker.wpColorPicker is not a function TypeError: colorPicker.wpColorPicker is not a function
at SGPBBackend.colorPicker