Hi,

I recently tried to update a 4.5.1 project to a newer version (4.7.3@stable) but the module caused a building failure.
I noticed a warming about an array to string conversion inside the CookieGroup file on lines 147 - 149:

$cookie = CookieDescription::create(array( 'ConfigName' => $cookieName, 'Title' => $cookieName, **'Provider' => $providerLabel, 'Purpose' => _t("CookieConsent_{$providerName}.{$cookieName}_Purpose", "$cookieName"), 'Expiry' => _t("CookieConsent_{$providerName}.{$cookieName}_Expiry", 'Session')** 150 ));

The same message also occurs on this line:
DB::alteration_message(sprintf('Cookie "%s" created and added to group "%s"', $cookieName, $groupName), 'created');