Unable to play video after downloading

Noticed in the last few days after I download a video from Vava dashcam and try to play it, it throws an error message “Failed to load. Click to retry”. Nothing I do makes it play. Some of the videos download and play, but I would say at least it doesn’t work 50% of the time. Any ideas what the problem is and how it can be fixed?

Not sure if this is related, but have also noticed sometimes it will throw an error message saying SD card error. Happens to both Vava dashcams that I have.