Hello @jennavee - can you click the “view details” link the log? It should show more details about the error. It also shows the page’s snapshot when the error occurred. It should show that the page when the error was logged.
If the SELECTION_EMPTY error happened because the selected elements are completely gone, then a simple solution is to add one more element to the selection. It could an element like the page’s title that usually do not change. In that case, the monitor will always find an element in the page and will trigger a change instead of erroring out.
Here is a related post that tries to solve a similar use cases:
Do check them out and let me know if you need help.