This is cased by setting isCollapsible() method's visibility to private in the latest release of the extension, and this method is called from the template.
The same problem is with the isDefaultCollapsed() method.
getCssClass(), getTooltip() also should be public.
Environment
PHP Version: 7.0
Magento Version: 2.2.2
Tweakwise Version: 1.0.8
Tweakwise Export Version: 1.1.1
Magento Deploy Mode: production & development
Steps to reproduce
Install latest (1.0.8) version of the Tweakwise extension
After upgrade to the latest (1.0.8) version of the Tweakwise extension, we get the following error:
This is cased by setting isCollapsible() method's visibility to private in the latest release of the extension, and this method is called from the template. The same problem is with the isDefaultCollapsed() method. getCssClass(), getTooltip() also should be public.
Environment
Steps to reproduce
Actual result