In some cases, during the installation(import) of the widget into the Muse library, the installation may be interrupted by a message about the error:
This message warns that the widget has been compiled into a program version that does not match the current version in which the widget is imported.
Make sure you are using the latest version of Adobe Muse. Open the Creative Cloud app and check for updates to Muse.
Contact me via support form and I send you widget compiled in your version of Muse.
If you do not have the time or for some other reason you can not use solutions 1 or 2 – install the previous version of Muse.