Prompt error when saving: function() return u (n)

Unable to save, prompt error: function(){return u(n),r.apply(this,arguments)} Such errors are generally caused by the server defense class function intercepting the data submitted when saving, because there are some options for the js code class in the theme settings.

Temporarily turn off defense functions, cdn, servers, website plug-ins, etc position Provided function 。

Specific solutions: Unable to save with error: function() {return u (n), r.apply (this, arguments)}