Notifications cannot save with this plugin active

As noted by other posts here, the when your plugin is enabled, any form without Pushdetails set up cannot save.

The error message is:

As TBT noted on this post: https://ww.wp.xz.cn/support/topic/error-message-there-was-an-error-while-saving-your-settings/ – you can get around this by disabling your plugin saving the notification then re-enabling Gravity Forms Pushover Add-On.

I also notice that this hasn’t been updated in a while – is this still maintained?