Same problem here with a 5L-II color
2021-01-24T18:27:50: [ERROR] GetQHYCCDSingleFrame error (-1)
Tried the update, tired the Nightly build and a few re-installs from the ground up, still no luck. Camera works in NINA on Windows and oddly enough will occasionally successfully get a picture after a very long download period if I just use the set exposure butting within the INDI control panel vs EKOS CCD interface. Was working great a week ago. On Ubuntu 20.04.1 if that helps any.