The process Model contains a node without a name in the site ERROR

hi everyone,

I get an error that i don't understand when i am trying to save or publish my process ,

it is throwing an error of type "The process Model contains a node without a name in the site primary language :HEBREW ERROR " for each node that i created on the modeler.

nowa few days ago i went in the admin console to see the optional languages that we can choose , and i choose hebrew back then.

BUT I DESELECTED  the language and save the changes. SO why is it throwing this error ?  i dont understand why it is blocking me to save the process that i built ?? what i need to do ?  

Thank