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java.lang.NullPointerException: null at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)[commons-io-2.4.jar:2.4] at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)[commons-io-2.4.jar:2.4] at org.apache.commons.io.IOUtils.copy(IOUtils.java:1744)[commons-io-2.4.jar:2.4] at myproject.addTestUser(Validation.java:157)[classes/:na]