"Null" token value in alert composer

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Hello,

We are experiencing a problem within the Alert Composer configuration.

In particular, we note that when a field (token) is not valued in the system it is extracted with the value "null" in the notification.

Could you give us some information or advice to manage this thing inside the alter composer, such as for example if it is "null" this field is not visible.

A thousand thanks

Good work

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