Updated Elementor Pro and immediately got a FATAL ERROR ont he frontend

Then disabled cowidgets-elementor-addons plugin, which made the website accessible again but the portfolio items return a 404.

Tried to enable the plugin again and was not able to do so due to an error:

“fatal error: cannot redeclare cowidgets_init() previously declared on line 28 of cowidgets.php.”

Commented out the following code but the 404 persists when clicking on a portfolio item:

function cowidgets_init() {
CoWidgets::instance();
}

I thought it was the codeless widgets and bought a yearly subscription at codeless.com for $49, only to find that it doesn’t work either.

Please help.