Just tried on the latest version and custom command works perfectly for me. I also get results from the API endpoint that you references. Saved commands work fine as well. Sounds like you have some issue with your setup.
Thanks for checking Anton. I found the issue:
I used a Apache rewrite rule to make Traccar >3.15 commands API backwards compatible for older instances of our app:
RewriteEngine On
RewriteRule "^/api/commands" "/api/commands/send" [PT]
After removing this I was able to select commands. Pretty clear now why it didn't work as I remapped the endpoint to fetch available commands.
Hi, since updating Traccar to 3.17 I am not able to send commands via the web interface anymore. It used to work with 3.14 but when I try to send a command I can not select anything from the "Type" dropdown.
Debugging the network I can see that there is a call to /api/commands/types but it returns an empty array.
No errors on the JS console or tracker-server.log
Also tried first creating a "Saved Command" but can not select any type there either.
Also tried on a fresh installation, with default config and DB.
GPS device I am working with uses H02 protocol.