Liberate license issue

Hi Greetings,

I am trying to invoke the Liberate tool but I constantly get this error message:

/////////////////////////////////////////          terminal     //////////////////////////////////////////////

ERROR (LMF-11005): License call failed for feature LIBNG_NEXT, version 1.000 and quantity 1. The license server search path is defined as <none>. The FLEXnet error message is as follows,
FLEXnet ERROR(-5, 234, 0): No such feature exists.

Run 'lic_error LMF-11005' for more information.
INFO (LIB-710): (Jan 23 12:51:08): Failed to check out a key for 'LIBNG_NEXT' (version 1.0).

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I have followed the instructions mentioned in the blog post:  https://community.cadence.com/cadence_blogs_8/b/di/posts/library-characterization-tidbits-accelerating-signoff-with-liberate-installation-and-licensing-part-1

and have set all my env variables 

//////////////////////// ///////////////////    cshrc file    /////////////////////////////////////////////////////////////////////

setenv CDS_Netlisting_Mode Analog
setenv QRC_ENABLE_QRCRACTION "1"
setenv CDS_AUTO_64BIT ALL
setenv CDS_AHDLCMI_ENABLE YES
setenv ALTOS_64 "1"
setenv EDITOR gedit

setenv LM_LICENSE_FILE 5280@xx.xxx.x.xx
setenv CDS_LIC_FILE $LM_LICENSE_FILE
setenv LANG en_US

###########################################################
################ Liberrate #############################

setenv LIBERATEHOME /home/install/LIBERATE201

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and also followed up with part of the blog: https://community.cadence.com/cadence_blogs_8/b/di/posts/library-characterization-tidbits-accelerating-signoff-with-liberate-installation-and-licensing-part-2 

and have checked that the version of both cdslmd and lmgrd is the same as required.

///////////////////////////////////////// Terminal //////////////////////////////////////////////////////////////////////////////////

# cdslmd -v
(cdslmd) FlexNet Licensing version v11.16.4.0 build 252457 x64_lsb

# lmgrd -v
lmgrd v11.16.4.0 build 252457 x64_lsb - Copyright (c) 1988-2019 Flexera. All Rights Reserved.

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Yet I am not able to resolve the issue. How do I resolve the issue?

Thanks
Regards!!!