Samsung washing machines can display an error code 5E. This means the washing machine has a “water drain error”. It’s basically timed out on empty, it’s tried draining out the water for 10 minutes and the water level still hasn’t fallen below a specified level (or at least it thinks it hasn’t). This error should be reset by pressing the Start/Pause button though if there is a fault it will need fixing or the error will just return.
A washing machine not emptying the water can have various causes as can a washing machine thinking it hasn’t drained the water because it’s possible that the signal telling the machine that the water has gone can sometimes not be triggered if a fault in the pressure system prevents it.
To troubleshoot this problem the first thing to check is the pump filter, which could be blocked. I have extensive advice on diagnosing pump faults here Washing machine won’t drain water (stuck full of water) | Faults on pressure system
If you can’t find anything using this advice I’d get an engineer out.