Traccar fails to start with forward.enable

I have nothing in the logs but traccar won't start with the following in traccar.conf, is there something obvious I'm missing please?:

<entry key='forward.enable'>true</entry>
<entry key='forward.url'>https://server/api/gpslogger?latitude={latitude}&longitude={longitude}&device={uniqueId}&battery={battery}&acuracy={accuracy}&altitude={altitude}&provider=traccar&activity={status}&api_password=PASSWORD-THAT-CONTAINS-A-!</entry>

Config looks fine to me.

I thought so, but if I comment it out then it starts!

I realised the problem. You need to escape characters to make it a valid XML.

In the future if Traccar doesn't start you need to check logs instead of guessing what can be wrong.

Thanks (although the logs didn't say anything - it just looked like everything started OK!).