Value is not visible after adding currency

After adding currency the value become not visible even after removing the added currency the value stays not visible.

This is the error I’ve got after saving the updated settings:

`
TypeError: jQuery(…).sortable is not a function
plugin_options.js?ver=4.5.3()plugin_…r=4.5.3 (line 272)
n.Callbacks/i()load-sc…r=4.5.3 (line 2)
n.Callbacks/j.fireWith()load-sc…r=4.5.3 (line 2)
.ready()load-sc…r=4.5.3 (line 2)
K()load-sc…r=4.5.3 (line 2)

plugin_…r=4.5.3 (line 274)`

https://ww.wp.xz.cn/plugins/currency-switcher/