fix: Use string for fallback values for str_getcsv

Author: DevDavido

src/config/exceptions.php

@@ -40,7 +40,7 @@
     | This is the email(s) the exceptions will be CC emailed to.
     |
     */
-    'emailExceptionCCto' => env('EMAIL_EXCEPTION_CC', []),
+    'emailExceptionCCto' => env('EMAIL_EXCEPTION_CC', ''),
 
     /*
     |--------------------------------------------------------------------------
@@ -50,7 +50,7 @@
     | This is the email(s) the exceptions will be BCC emailed to.
     |
     */
-    'emailExceptionBCCto' => env('EMAIL_EXCEPTION_BCC', []),
+    'emailExceptionBCCto' => env('EMAIL_EXCEPTION_BCC', ''),
 
     /*
     |--------------------------------------------------------------------------