java.nio.channels.ClosedChannelException

On Ubuntu 18.04, running ETL with the usual command line:

mvn exec:java -Dexec.mainClass="org.heigit.bigspatialdata.oshdb.tool.importer.extract.Extract" -Dexec.args="--pbf /home/ertert/oshdb-new/oshdb-tool/etl/files/switzerland-internal.osh.pbf -tmpDir ./tmpFiles -workDir ./results --timevalidity_from 2017-01-01" -Dexec.cleanupDaemonThreads=false

when execution starts I get:

joining on thread Thread[org.heigit.bigspatialdata.oshdb.tool.importer.extract.Extract.main(),5,org.heigit.bigspatialdata.oshdb.tool.importer.extract.Extract]
extracting key tables ...[WARNING]
java.lang.RuntimeException: java.nio.channels.ClosedChannelException

which becomes :

BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.887 s
[INFO] Finished at: 2020-11-26T08:24:50Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:3.0.0:java (default-cli) on project etl: An exception occured while executing the Java class. java.nio.channels.ClosedChannelException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:3.0.0:java (default-cli) on project etl: An exception occured while executing the Java class. java.nio.channels.ClosedChannelException

java.nio.channels.ClosedChannelException is a fairly common issue and generally related to programming. Any thoughts?