For Google Roads use this link:
https://mt0.google.com/vt/lyrs=m,traffic&hl=en&x={x}&y={y}&z={z}&s=Galil
Have you disabled sanitization?
With sanitization off, it worked. A must be in here https://www.traccar.org/configuration-file/
What's the difference between &s=Ga
and &s=Galil
?
I go to Settings > Server > Preferences > Custom map and add:
as describe here: https://www.traccar.org/map-layers/
Then Save.
I go to Settings > Preferences > Map > Active maps and activate "Custom XYZ".
I get back to the map, click on layers icon, select Custom XYZ and the map goes blank and never show don't matter how many times I press F5.