PHP Notice: Array to string conversion

Hi,

we are adding the “support” for this plugin in our Themes and we came across this issue:

Notice: Array to string conversion in …/plugins/wpforms-lite/includes/class-frontend.php on line 157

How to replicate this issue?
1. set the Include Form Styling setting to “Base styling only” in the plugin settings.
2. add a form to the page and visit the front page with WP_Debug set to true.

The issue is in the $classes variable, which in this case is an empty array and is causing this issue.

I hope you will be able to fix this in the next plugin version.

Take care!