MQ Explorer is giving the following error while trying to add a remote queue manager TEST on (IBM MQ 9.3.0.15) on RHEL 8:

I can telnet to port 1414 from the MQ Explorer to the IBM MQ machine & checked all firewall settings on source and target.
Performed the following on IBM MQ:
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Created Queue Manager
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crtmqm -q TEST
strmqm TEST
runmqsc TEST
Defined Listener
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DEFINE LISTENER (LS1) TRPTYPE(TCP) CONTROL(QMGR) PORT(1414)
START LISTENER(LS1)
Defined Channel
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DEFINE CHANNEL(CH1) CHLTYPE(SVRCONN) TRPTYPE(TCP) MCAUSER('mqm')
START CHANNEL(CH1)
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This is a test environment and I'm trying to create other queue managers & manage all administrative task from MQ Explorer.
MQ Exporer is installed on host machine, whereas IBM MQ is installed on a guest vmware machine.
Appreciate any guidance.
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Muhammad Faisal Syed
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