Locally install the package and everything works, perform the updates and did the PHP 7 fix until this error appeared:

Notice: Undefined offset: 824 in C:\xampp\htdocs\multitienda\templates\sj_revo\menusys\ytmenubase.php on line 86

Notice: Trying to get property of non-object in C:\xampp\htdocs\multitienda\templates\sj_revo\menusys\ytmenubase.php on line 86

I searched for information but I can not find a solution, thanks for your help.

Dear barone

About notice messages, it doesn't effect to your site performance. You can hidden theme by opening the file PHP.ini:

In this file search for the phrase “ error_reporting = E_ALL” ,[without inverted commas]
Here replace this with “error_reporting = E_ALL & ~E_NOTICE & ~E_WARNING “ (Show all errors, except for notices and coding standards warnings)

or Don't worry about these notices. Please go to administrator page > "Global Configuration" > tag "Server" > tag " Error Reporting" please choose "None".

thanks

Perfect, thank you very much for your prompt response.

Dear barone

If you have any the problem please contact us

thanks