firebase note setup error

After setting up firebase database and connecting to apigee getting below error while doing node setup

[[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to reaERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.apache.maved artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central (http://repo1.maven.org/maven2): This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server (repo1.maven.org) -> [Help 1]

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Where did you see that error? What specific command were you running, or what UI action were you performing, and where did the error appear?
Is it in fact a transient error, as noted? Did it go away?