Undefined Index Error

Hey OpaJaap,

Long time, no talk. I hope all is well with you and your family.

I recently got back into my personal site where I use your plugin. I was about five or six versions behind your latest build. The update went fine, but now I receive the following warning across the top of the page:

Notice: Undefined index: id in wp-content/plugins/wp-photo-album-plus/wppa-wpdb-insert.php on line 27

Sometimes the warning prevents the rest of the page from loading.

Any idea how I might be able to fix this?

Thank you.

https://wordpress.org/plugins/wp-photo-album-plus/