Knime 3.5.3执行Twitter Search报错Bad Authentication data. code -215求助

You're hitting this authentication error when running the Twitter Search node after setting up the Twitter API Connector in KNIME 3.5.3:

ERROR Twitter Search 2:2 Execute failed: 400:The request was invalid. An accompanying error message will explain why. This is the status code will be returned during version 1.0 rate limiting. In API v1.1, a request without authentication is considered invalid and you will get this response. message - Bad Authentication data. code - 215

Regenerating your Consumer Key and Secret didn't fix things, so let's break down the most likely fixes for this issue:

• Double-check your credential copy-paste accuracy
  It’s a simple step, but it’s the most common culprit. When regenerating your Consumer Key and Secret, make sure you copy the full, exact strings from your Twitter Developer Dashboard—no leading or trailing spaces, no truncated characters. Even one misplaced character will trigger this 215 error.

• Verify your Twitter Developer project configuration
  Confirm that your project in the Twitter Developer Portal has the Twitter API v1.1 enabled (KNIME 3.5.3’s Twitter nodes rely on this older API version). Also, check that your app has basic read permissions (required for search) and isn’t restricted in any way—you can find this under the "App permissions" tab in your project settings.

• Clear KNIME’s authentication cache
  KNIME sometimes caches old credential data that conflicts with your new keys. Try this:

  1. Close KNIME completely.
  2. Navigate to your KNIME workspace’s hidden .metadata folder.
  3. Look for preference files related to Twitter (e.g., org.knime.ext.twitter.prefs) and delete them.
  4. Restart KNIME, reconfigure the Twitter API Connector with your fresh keys, and test the search again.

• Upgrade to a newer KNIME version
  KNIME 3.5.3 is quite outdated (released in 2018), and Twitter has updated its API authentication rules multiple times since then. Newer KNIME versions (4.x and above) have updated Twitter nodes that better align with current API requirements. If the above steps don’t work, upgrading to a supported version might be the quickest fix.

• Check for account-level restrictions
  Make sure your Twitter Developer account isn’t suspended or flagged for policy violations. Even valid keys won’t work if your account has restrictions—you can verify your account status in the "Account" section of the Developer Portal.

If you’ve tried all these steps and still see the error, double-check that the Twitter API Connector node is set to use OAuth 1.0a authentication (the standard for Twitter v1.1 calls).

内容的提问来源于stack exchange，提问作者Mehrdad