Back office: error

[tanohdaby08]

Hello.
I have developed my shop locally and it works well.
Since it went online I can not access the back office. I specify that my site works? the trouble is at the BO level.
in debug mode here is the error that displays

Whoops, looks like something went wrong.

(1/1) ParameterNotFoundException

The service "prestashop.core.mail_template.theme_folder_catalog" has a dependency on a non-existent parameter "mail_themes_dir". Did you mean this: "themes_dir"?

in ParameterBag.php line 102

at ParameterBag->get('mail_themes_dir')in EnvPlaceholderParameterBag.php line 57

at EnvPlaceholderParameterBag->get('mail_themes_dir')in ParameterBag.php line 219

at ParameterBag->resolveString('%mail_themes_dir%', array('mail_themes_dir' => true))in ParameterBag.php line 189

at ParameterBag->resolveValue('%mail_themes_dir%')in ResolveParameterPlaceHoldersPass.php line 64

at ResolveParameterPlaceHoldersPass->processValue('%mail_themes_dir%', false)in AbstractRecursivePass.php line 60

at AbstractRecursivePass->processValue(array('%mail_themes_dir%', object(Reference), object(Reference)), false)in ResolveParameterPlaceHoldersPass.php line 79

at ResolveParameterPlaceHoldersPass->processValue(array('%mail_themes_dir%', object(Reference), object(Reference)))in AbstractRecursivePass.php line 67

at AbstractRecursivePass->processValue(object(Definition), true)in ResolveParameterPlaceHoldersPass.php line 79

at ResolveParameterPlaceHoldersPass->processValue(object(Definition), true)in AbstractRecursivePass.php line 60

[tuk66]

mail_themes_dir is defined in the /app/config/config.yml. Check if you haver uploaded all files to the server.