Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Stack Overflow by Raylen Moore
, 1 year ago
Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference	at com.amazonaws.util.BinaryUtils.fromHex(BinaryUtils.java:59)	at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1724)	at com.amazonaws.mobileconnectors.s3.transferutility.UploadTask.uploadSinglePartAndWaitForCompletion(UploadTask.java:203)	at com.amazonaws.mobileconnectors.s3.transferutility.UploadTask.call(UploadTask.java:85)	at com.amazonaws.mobileconnectors.s3.transferutility.UploadTask.call(UploadTask.java:44)	at java.util.concurrent.FutureTask.run(FutureTask.java:237)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)	at java.lang.Thread.run(Thread.java:818)