The Dell EMC PowerSwitch S5248F-ON switches must have SmartFabric OS10.5.0.0 or later. Run the show version command to check the operating system version. Dell Technologies recommends upgrading to the latest release available on Dell Digital Locker (account required).
OS10# show version
Dell EMC Networking OS10 Enterprise
Copyright (c) 1999-2020 by Dell Inc. All Rights Reserved.
OS Version: 10.5.2.3
Build Version: 10.5.2.3.316
Build Time: 2020-12-12T02:56:02+0000
System Type: S5248F-ON
Architecture: x86_64
Up Time: 02:18:20