TALES expressions on alerts notification not working

Version: 4.2.3

I am trying to use TALES exprssion on my notification, but it is not working, I copied the exact same thing from documentaion but still failed to send an alert:

<tal:block tal:repeat="item esa/causes">

Impact Chain: ${item/impactChain}

Device: ${item/evt/device}

Component: ${item/evt/component}

Severity: ${item/evt/severity}

Time: ${item/evt/lastTime}

Message:

${item/evt/message}

<a tal:attributes="href item/urls/eventUrl">Event Detail</a>

<a tal:attributes="href item/urls/ackUrl">Acknowledge</a>

<a tal:attributes="href item/urls/closeUrl">Close</a>

<a tal:attributes="href item/urls/eventsUrl">Device Events</a>

</tal:block>

Error log at zenactiond shows:

ERROR zen.actions: EOF in middle of construct, at line 9, column 1