Error -375006 When Using Unflatten From JSON in G Web Development Software

Updated Aug 31, 2026

Reported In

Software

  • G Web Development Software
  • LabVIEW

Issue Details

I am developing a web-based user interface using G Web Development Software. The WebVI exchanges data with the backend LabVIEW Web Service through HTTP requests using JSON as the data format.

While running the WebVI, I encounter the next error:

Error -375006: Unflatten From JSON in [WebVI.gviweb]

Solution

This issue occurs because the structure of the JSON string returned by the LabVIEW Web Service does not exactly match the cluster wired to the Unflatten From JSON node in the WebVI. In G Web applications, JSON parsing is strict and case-sensitive, so any mismatch in element names, data types, or overall structure results in error -375006.

 

To resolve this issue, you must verify and align the cluster structure wired to the Type and defaults input of the Unflatten From JSON node with the JSON structure generated by the LabVIEW Web Service response. Ensuring that both structures match exactly allows the data to be parsed correctly.

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