I’m trying to send the “executeAction” message from my background script to my content script that is supposed to listen for it.
I have put console.log messages everywhere to see what was causing the problem:

(background.js)

function triggerAction(newTab) {
    console.log('Triggering action number: ', actionStep);
    chrome.scripting.executeScript({
        target: { tabId: newTab.id },
        files: ['content.js']
    }, () => {
        console.log('Content script injected');
        chrome.runtime.sendMessage(newTab.id, { action: 'executeAction', actionStep: actionStep });
        console.log('Message sent to content script');
    });
}

In my console, the following message doesn’t appear : ‘Message sent to content script’.

Here is my listener on my content.js:

(content.js)

document.addEventListener('DOMContentLoaded', () => {
    chrome.runtime.onMessage.addListener((message, _sender, _sendResponse) => {
        console.log('Received message');
        if (message.action === 'executeAction') {
            console.log('Received message to execute action: ', message.actionStep);
            executeAction(message.actionStep);
        }
    });
});

I tried to put an executeScript to make sure that content.js was active when sending the message.