com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'Hello': was expecting ('true', 'false' or 'null') at [Source: java.io.StringReader@4983a458; line: 1, column: 6]

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If you're using Java Chronicle it might be a Cleanup problem. Either add @ignore to the test or delete the memory map file and do it again.

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If you're using Facebook API, they now use OAuth2, so your URL should contain version number, like this:
facebook.authorizationURL="https://graph.facebook.com/v2.3/oauth/authorize"

Solutions on the web

via Google Groups by Dan Hunt, 1 year ago
Unrecognized token 'Hello': was expecting ('true', 'false' or 'null') at [Source: java.io.StringReader@4983a458; line: 1, column: 6]
via GitHub by yucer
, 10 months ago
Unrecognized token 'swagger': was expecting ('true', 'false' or 'null') at [Source: src\main\resources\petstore.yaml; line: 1, column: 9]
via camel-users by panzerhans, 1 year ago
Unrecognized token 'Missing': was expecting ('true', 'false' or 'null') at [Source: java.io.ByteArrayInputStream@67618968; line: 1, column: 9]
via neverb.net by Unknown author, 2 years ago
Unexpected character ('D' (code 68)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') at [Source: java.io.StringReader@18600912; line: 1, column: 2]
via Stack Overflow by Thor
, 2 years ago
Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') at [Source: [B@6b1759e3; line: 1, column: 2]
via Google Groups by ibsdevs, 1 year ago
Unexpected character (''' (code 39)): was expecting double-quote to start field name at [Source: [B@25e8d2d5; line: 2, column: 6]
com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'Hello': was expecting ('true', 'false' or 'null') at [Source: java.io.StringReader@4983a458; line: 1, column: 6]

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