Speed not displayed on map and in export. All points show speed=0.0, motion=false

Hello everyone,

I'm facing a critical issue with my GPS tracking server and have been troubleshooting for two days without success.
On the Live Map: All vehicles show 0.0 km/h, regardless of their actual speed.
In Data Exports: All track points have the following parameters:
"speed": 0.0 km/h
motion=false
Altitude=0

Valid	Time	Latitude	Longitude	Altitude	Speed	Address	Attributes

ИСТИНА	2025-09-03 14:45:33	52.123456	5.987654	0 m	0.0 km/h	52.123456°, 5.987654°	distance=377.38 totalDistance=1.127777201E7 motion=false
ИСТИНА	2025-09-03 14:46:16	52.124789	5.986543	0 m	0.0 km/h	100 Example Avenue, Generic City, GC	distance=396.67 totalDistance=1.12777913E7 motion=false
ИСТИНА	2025-09-03 14:46:39	52.125001	5.985001	0 m	0.0 km/h	55B Sample Road, Generic City, GC	distance=53.01 totalDistance=1.127784431E7 motion=false
ИСТИНА	2025-09-03 14:46:59	52.125100	5.985100	0 m	0.0 km/h	58 Sample Road, Generic City, GC	distance=6.18 totalDistance=1.127785049E7 motion=false
ИСТИНА	2025-09-03 14:47:04	52.125202	5.985205	0 m	0.0 km/h	60 Sample Road, Generic City, GC	distance=19.3 totalDistance=1.127786979E7 motion=false

Manifest-Version: 1.0
Implementation-Version: 4.15

Traccar client v9.6.1 android.

Thanks.

Logs?

2025-09-03 17:37:38  INFO: [d0f1fb41: osmand > 100.147.45.9] HEX: 485454502f312e312032303026774683a20300d0a0d0a
2025-09-03 17:37:38  INFO: [d0f1fb41] id: 1, time: 2025-09-03 17:43:02, lat: 52.123456, lon: 5.987654, course: 0.0
2025-09-03 17:37:38  WARN: Geocoding failed - HTTP 429 Too Many Requests - ClientErrorException (...)
2025-09-03 17:37:38  INFO: [d0f1fb41] id: 1, time: 2025-09-03 17:43:03, lat: 52.123457, lon: 5.987655, course: 0.0
2025-09-03 17:38:08  WARN: [d0f1fb41] error - Connection reset by peer - IOException (...)
2025-09-03 17:38:08  INFO: [d0f1fb41] disconnected

You have to update your server.

This is probably because the client application has been updated and is now sending data in a different way. Can you tell me what software is compatible with the old server? Regards.

You can try old version of the client.

Thanks.