Hi everyone,
I’m encountering a strange issue in Postman and I haven’t been able to find a clear explanation for it.
I’m making a simple GET request to an internal API.
The request works correctly and the server returns:
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HTTP 206 Partial Content (this is expected)
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Content-Length: 20
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No body
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Content-Encoding: gzip
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Response body visually empty in Postman
Example response headers:
HTTP/1.1 206 Partial Content
Content-Encoding: gzip
Content-Length: 20
Connection: Keep-Alive
However, in the Test tab, Postman always marks the request as failed, showing this error:
JSONError: No data, empty input at 1:1
This happens even if I delete all test code and leave the Test script completely empty.
It seems like Postman attempts to automatically parse the response body as JSON because of the gzip encoding, even though the decompressed body is empty…and the Test tab fails before my test script even runs.
I can’t modify backend behaivour.
I tried forcing the server not to send compressed responses by explicitly adding:
Accept-Encoding: identity
This worked as expected on the network side (the server stopped sending gzip and returned:
Content-Length: 0
Content-Encoding: (absent)
However, the behavior in Postman remained exactly the same:
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Response is 206 OK
-
Body is 100% empty
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Script is empty
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Test Results failing with “JSONError: No data, empty input at 1:1“
So disabling gzip did not resolve the issue.
Anybody can help me with this? Sorry for my english
