JSON-parsing exception in certain cases

[boris-petrov]

For example, when the API key is invalid and assemblyAi.transcripts().submit(...) is called, I get the following exception:

...
Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'Invalid': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false')
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 8]
        at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2584)
        at com.fasterxml.jackson.core.JsonParser._constructReadException(JsonParser.java:2610)
        at com.fasterxml.jackson.core.JsonParser._constructReadException(JsonParser.java:2618)
        at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:825)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:3017)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2995)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._matchToken(ReaderBasedJsonParser.java:2760)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:2035)
        at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:780)
        at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:5018)
        at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4921)
        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3868)
        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3836)
        at com.assemblyai.api.resources.files.FilesClient.upload(FilesClient.java:100)
        ... 26 common frames omitted

The error message is Invalid API key but it's parsed as JSON which leads to this error. Which is rather inconvenient as one can't see the real reason for the failure.