"x-generated-css" class and other css code missing on migrated site

[Hill]

Best regards, I was migrating my site (http://johnsmallmountain.com) to (http://jhonsmallmount.wpengine.com) using the wpengine tool, and it seems that there are not the same css classes (x-generated-css), I tried to migrate using the wp migration all-in-one plugin, but it didn’t work either (the missing css code is not yet found ), also use the “better search replace” plugin to change the texts from (johnsmallmountain.com) to (jhonsmallmount.wpengine.com) and I still can’t find a solution, I hope you can help me

[ruenel]

Hello John,

Thanks for writing in!

There is a problem in the staging site. An error is displaying:

/*Unknown Error preg_replace_callback(): Compilation failed: invalid range in character class at offset 11*/body{
      font-family: "Open Sans" !important;

Please login to the live site and then go to Pro > Validation > Theme Options Manager. Download the XCS file to your local computer. Go to the staging site url and login. In Pro > Validation > Theme Options Manager of the staging site, you can import or upload the XCS file so that both the sites will have the same theme options and custom css which will be displayed as the “x-generated-css”.

To know more about the Theme Options Manager (formerly known as Customizer Manager), you can check this out: https://theme.co/apex/forum/t/addons-customizer-manager/77