$ gnome-maps 
Gjs-Message: 16:59:17.020: JS WARNING: [resource:///org/gnome/Maps/js/mapSource.js 128]: reference to undefined property "aerial"(org.gnome.Maps:5316): Gjs-CRITICAL **: 16:59:17.020: JS ERROR: TypeError: source is undefined
_createTileSource@resource:///org/gnome/Maps/js/mapSource.js:81:9
_createCachedSource@resource:///org/gnome/Maps/js/mapSource.js:96:22
createAerialSource@resource:///org/gnome/Maps/js/mapSource.js:128:12
_init@resource:///org/gnome/Maps/js/layersPopover.js:102:35
_init@resource:///org/gnome/Maps/js/mainWindow.js:118:30
_createWindow@resource:///org/gnome/Maps/js/application.js:265:28
vfunc_activate@resource:///org/gnome/Maps/js/application.js:284:14
main@resource:///org/gnome/Maps/js/main.js:57:24
run@resource:///org/gnome/gjs/modules/script/package.js:222:19
start@resource:///org/gnome/gjs/modules/script/package.js:206:5
@/usr/bin/gnome-maps:2:17