The range of years to display on the leaflet map are chosen using the range of years in the uploaded device/grid years. This can cause a mismatch if a subset of those years are chosen using 'Start year' and 'End year', this causes a lookup of the results object to return NA and crashes the app. Also, currently the SeU values don't get updated when choosing a new year to display, so you could choose to show the SeU raster, then change year and it will keep the original SeU values until the button is pressed again.
The range of years to display on the leaflet map are chosen using the range of years in the uploaded device/grid years. This can cause a mismatch if a subset of those years are chosen using 'Start year' and 'End year', this causes a lookup of the results object to return NA and crashes the app. Also, currently the SeU values don't get updated when choosing a new year to display, so you could choose to show the SeU raster, then change year and it will keep the original SeU values until the button is pressed again.