Google Reverse Geocoding instructions don't work

I followed the instructions here: https://www.traccar.org/reverse-geocoding/

When I click in "show address" nothing happens and the log records:

2019-11-01 16:53:55  WARN: Geocoding failed - Empty address. Error: You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account - GeocoderException (JsonGeocoder:69 < *:31 < *:97 < *:94 < ...)

You need an API key, as the error message says.

So, it means this page https://www.traccar.org/reverse-geocoding/ needs an update.
Because it makes us believe there is a free limited Google reverse geocoding, and that these two entries are enough

<entry key='geocoder.enable'>true</entry>
<entry key='geocoder.type'>google</entry>

Also, this OpenCage entry:

<entry key='geocoder.url'>http://api.opencagedata.com/geocode/v1</entry>

is missing an S in http. Should be https://

Documentation was correct at the time it was written.

There are a lot of problem on reverse geocoding actually
it should be good if we can update the documentation

Sure, feel free to send updated information and we'll update the website.

API KEY is needed for Google