java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.orientechnologies.teleporter.util.ODriverConfigurator.isDriverAlreadyPresent(ODriverConfigurator.java:175)
at com.orientechnologies.teleporter.util.ODriverConfigurator.checkConfiguration(ODriverConfigurator.java:124)
at com.orientechnologies.teleporter.main.OTeleporter.execute(OTeleporter.java:256)
at com.orientechnologies.teleporter.main.OTeleporter.main(OTeleporter.java:206)

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