Getting error: MDK middleware is not supported with this license.

Hello,

I am using

IDE-Version:
µVision V5.20.0.0
Copyright (C) 2016 ARM Ltd and ARM Germany GmbH. All rights reserved.

License Information:
Snehal Patil
Eaton Corporation
LIC=----

Tool Version Numbers:
Toolchain: MDK-Lite Version: 5.20
Toolchain Path: C:\Keil_v5\ARM\ARMCC\Bin
C Compiler: Armcc.exe V5.06 update 2 (build 183)
Assembler: Armasm.exe V5.06 update 2 (build 183)
Linker/Locator: ArmLink.exe V5.06 update 2 (build 183)
Library Manager: ArmAr.exe V5.06 update 2 (build 183)
Hex Converter: FromElf.exe V5.06 update 2 (build 183)
CPU DLL: SARMCM3.DLL V5.20
Dialog DLL: DCM.DLL V1.13.7.0
Target DLL: UL2CM3.DLL V1.157.18.0
Dialog DLL: TCM.DLL V1.14.9.0

when I am compiling code I am getting error MDK Middleware is not available with this license.
what does this mean how should I resolve this error.