Russian media reports that the failed docking was due to an error detected with the ISS navigation system and that no error was detected with the Soyuz MS-14.
Russian spacecraft was forced to cancel docking
2019-08-26T02:53:07.474Z
With only 100 meters left to ISS International Space Station, the Russian vessel Soyuz MS-14 was forced to cancel the docking. On board the ship was Russia's first humanoid robot, which was supposed to be used for experiments on the ISS.
Source: svt