[ndnSIM] ndnsim doubts

[amulya amy]

Hello,
Whenevr i try running ndn simple with content freshness scenario, i
encounter following error;

ERROR:
msg="Invalid or unregistered component name "dumb-requester" in env
variable NS_LOG, see above for a list of valid components",
file=../src/core/model/log.cc, line=567
terminate called without an active exception

whats the problem? please help
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