Your Site is Experiencing a Technical Issue

Every week or so I’m getting an email stating my website is having a technical issue. However, website looks fine. Email states it’s this plugin. Any ideas?

In this case, WordPress caught an error with one of your plugins, WP Mail SMTP.

First, visit your website (https://[website]/) and check for any visible issues. Next, visit the page where the error was caught ([website]/wp-cron.php?server_triggered_cronjob) and check for any visible issues.

Error Details
=============
An error of type E_ERROR was caused in line 118 of the file /www/pifapifu_689/public/wp-content/plugins/wp-mail-smtp/vendor/google/apiclient/src/Google/Http/REST.php. Error message: Uncaught Google_Service_Exception: {
“error”: {
“errors”: [
{
“domain”: “usageLimits”,
“reason”: “accessNotConfigured”,
“message”: “Access Not Configured. Calendar API has not been used in project 202700143595 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/calendar-json.googleapis.com/overview?project=202700143595 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.”,
“extendedHelp”: “https://console.developers.google.com/apis/api/calendar-json.googleapis.com/overview?project=202700143595”
}
],
“code”: 403,
“message”: “Access Not Configured. Calendar API has not been used in project 202700143595 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/calendar-json.googleapis.com/overview?project=202700143595 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.”
}

The page I need help with: [log in to see the link]