Database Error

Hello, I am receiving this message:

Bază de date (eroare)
Eroare: Column 'email' cannot be null (1048)
ÃŽntrebare: INSERT INTO cscart_subscribers (`email`, `timestamp`) VALUES (NULL, 1442246538)


index.php (fn_dispatch): 25
app/functions/fn.control.php (fn_run_controller): 451
app/functions/fn.control.php (include): 680
app/addons/newsletters/controllers/frontend/ (db_query): 29
app/functions/fn.database.php (call_user_func_array): 130
app/Tygh/Database.php (query): 359
Please help me!

may help

Sorry, I don't understand what to do...

Do you have any 3rd party modifications on the store?

No, I don't have, just cs-cart and addons.