Please perform the following steps to resolve the issue:
1- Make sure that 20% internal storage is free for which clear the RAM memory and storage of device (Settings > Device care > Memory/Storage > Clean Now).
2- Stop the background running app (Tap on the left soft key and close all the running apps).
3- Check for the latest device O/S (Settings > Software Update > Download updates manually).
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > click on “+“icon > send feedback > error report/ask questions).
