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  1. ,
    Expert tip

    Check if you didn't set RequestProperty Content-Type to the wrong type or if you're trying to send the wrong file to the server.

  2. ,

    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 Tercus
, 1 year ago
Server returned HTTP response code: 503 for URL: https://ipv4.google.com/sorry/IndexRedirect?continue=https://scholar.google.com/scholar%3Fhl%3Den%26oe%3DASCII%26num%3D20%26as_sdt%3D2006&hl=en&q=CGMSBFhDZhcYrbCMvwUiGQDxp4NLfnqIFz9y9s9bYeUiRVwogv02XcI
via GitHub by mocherry
, 1 year ago
Server returned HTTP response code: 503 for URL: https://ipv4.google.com/sorry/index?continue=https://scholar.google.com/scholar%3Fhl%3Den%26oe%3DASCII%26num%3D20%26as_sdt%3D2006&hl=en&q=EgSE5i7XGKOQh8EFIhkA8aeDSwUT7RYs_1im9xcSXtUiV3gq7J4QMgFj
via Stack Overflow by Emalka
, 1 year ago
Server returned HTTP response code: 400 for URL: https://www.googleapis.com/customsearch/v1?key=xxxxxxxxxxxxxxxxxxxxxxxx&cx=001736963393770650507:vah--basm5u&q=medical&hl=en&start=101
via Stack Overflow by RajSharma
, 5 months ago
Server returned HTTP response code: 400 for URL: https://ads.line.me/api/v1.0/authority_delegations/get
via Stack Overflow by TDeveloper
, 5 months ago
Server returned HTTP response code: 403 for URL: https://www.googleapis.com/customsearch/v1?key=????&cx=013036536707430787589:_pqjad5hr1a&q=?????
via Stack Overflow by ThatGuy343
, 2 years ago
Server returned HTTP response code: 400 for URL: https://www.googleapis.com/urlshortener/v1/url
java.io.IOException: Server returned HTTP response code: 503 for URL: https://ipv4.google.com/sorry/IndexRedirect?continue=https://scholar.google.com/scholar%3Fhl%3Den%26oe%3DASCII%26num%3D20%26as_sdt%3D2006&hl=en&q=CGMSBFhDZhcYrbCMvwUiGQDxp4NLfnqIFz9y9s9bYeUiRVwogv02XcI	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1839)	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)	at net.sf.jabref.logic.net.URLDownload.downloadToString(URLDownload.java:123)	at net.sf.jabref.gui.importer.fetcher.GoogleScholarFetcher.runConfig(GoogleScholarFetcher.java:166)	at net.sf.jabref.gui.importer.fetcher.GoogleScholarFetcher.processQueryGetPreview(GoogleScholarFetcher.java:82)	at net.sf.jabref.gui.importer.fetcher.GeneralFetcher.lambda$actionPerformed$4(GeneralFetcher.java:191)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)