Ok. This is the new version I have:
let phrase = new ComputablePhrase(rollText);
await phrase.compute(this.entity.system.props, {
computeExplanation: true,
triggerEntity: entity
});
let speakerData = ChatMessage.getSpeaker({
actor: entity.entity,
token: entity.entity.getActiveTokens()?.[0]?.document,
scene: game.scenes.current
});
phrase.postMessage({
speaker: speakerData
});}%```

