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  1. ,

    401 means "Unauthorized", so there must be something with your credentials. You need to pass the authentication to let the server know its a valid user. Check whether the authentication details are provided.

Solutions on the web

via GitHub by arhimondr
, 1 year ago
Server returned HTTP response code: 500 for URL: http://127.0.0.1:8989/async?953102103
via GitHub by mprins
, 1 year ago
Server returned HTTP response code: 500 for URL: http://localhost:8081/brmo-service/__WPI_THREAD__.wait?proces=1&__WPI__=6b8ac095&_sourcePage=fwAgyiz0m68%3D
via Stack Overflow by Priyanka
, 2 years ago
Server returned HTTP response code: 400 for URL:https://api.twitter.com/1.1/followers/ids.jsonscreen_name=*****&user_id=******
via Stack Overflow by pamobo0609
, 2 years ago
Server returned HTTP response code: 500 for URL: http://some.url/api/save
via Stack Overflow by nmodi
, 2 years ago
Server returned HTTP response code: 403 for URL: http://translate.google.com/
java.io.IOException: Server returned HTTP response code: 500 for URL: http://127.0.0.1:8989/async?953102103	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1840)	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)	at Main.executeGet(Main.java:112)	at Main.access$100(Main.java:57)	at Main$ExecuteRequestTask.call(Main.java:177)	at Main$ExecuteRequestTask.call(Main.java:146)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)