Error: [] operator not supported for strings in shortcode_add_class() (line 521 of

For the 8.x branch, the same modification can be put on to line 195,
...
+ $classes = array();
$classes[] = $new_class;

at file src/Plugin/ShortcodeBase.php

Please include this fix for the next update of 7.x so our manual code revision won't be overridden. Just worried since it's been 6 months since the 7.x branch has been talked about. Thank you!

Hello
since no update yet of module , can someone explain where to add this line ?
function shortcode_add_class($class = '', $default = '') {
if ($class) {
if (!is_array($class)) {
$class = explode(' ', $class);
}
array_unshift($class, $default);
$class = array_unique($class);
}
else {
$class[] = $default;
}
return implode(' ', $class);
}
Thanks

The Drupal 7 version fixed, just rolled out a new release 7.x-2.25.

I would appreciate if you could test this release with this bug.

I try to fix D8 version tomorrow.

Fixed. Would you mind to check it?

Looks like I'm still running into this error with 7.x-2.26. See #3014037: Error: [] operator not supported for strings in shortcode_add_class()

Anybody have any ideas for a fix?

Sorry for the noise. It was an error on my part. Disregard my comment.