Thanks for getting in touch. In case you haven’t tried it, we do also offer a free 30-day trial of our no-installation, cloud-hosted service, TubePress Express [1, 2]. It’s very easy to use and may be worth testing before you implement the following fix.
TubePress relies on a 3rd-party library called Twig, and All-in-One Event Calendar uses a conflicting version of Twig (version 1.14, which is very old). To resolve the error, you’ll need to “upgrade” All-in-One’s copy of Twig to match TubePress’s version of Twig, which will allow the two plugins to co-exist. Thankfully, it’s a relatively easy process:
1. Download Twig 1.24.0 from here 3
2. Unzip this file on your local machine. It will expand into a directory named Twig-1.24.0
3. Put your site into maintenance mode.
4. On your web server, *remove* the entire directory at wp-content/plugins/all-in-one-event-calendar/vendor/twig. This effectively removes the old version of Twig.
5. Upload the entire directory from your local machine at Twig-1.24.0/lib/Twig to wp-content/plugins/all-in-one-event-calendar/vendor. After the upload, you should have a directory at wp-content/plugins/all-in-one-event-calendar/vendor/Twig
6. Rename that directory to all lowercase. You should now have a directory at wp-content/plugins/all-in-one-event-calendar/vendor/twig
Of course, if you upgrade the All-in-One Event Calendar plugin, these steps will need to be repeated. The long-term solution is for Timely to upgrade their copy of Twig to a modern version.
Let us know if there is anything else we can do for you, and thank you for using TubePress!
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