Javascript email IOExemption

I’m converting my DSL script to Javascript and having some issues with sending emails

var email="";
var thingActions = Java.type("org.openhab.core.model.script.actions.Things");
var mailActions = thingActions.getActions("mail","mail:smtp:mythbox_mail");

rules.when().item("MQTT_Test").changed().then(event => {
	mailActions.sendMail(email, "test email", "test email"+ event.newState);
}).build("test event", "testing");

log file:

> 2021-12-31 09:21:13.942 [WARN ] [ab.binding.mail.internal.SMTPHandler] - Sending the email to the following server failed : localhost:25
> 2021-12-31 09:21:13.942 [WARN ] [ab.binding.mail.internal.SMTPHandler] - javax.mail.MessagingException: IOException while sending message;
>   nested exception is:
>         javax.activation.UnsupportedDataTypeException: text/plain; charset=UTF-8

I see another reference to this issue here : Mail Binding errors, but it used to work

known bug:

Fix just got meged and will be part of the next SNAPSHOT and upcoming Milestone…