Title: Error: "server did not return valid JSON data"
Last modified: August 22, 2016

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# Error: "server did not return valid JSON data"

 *  Resolved [pch101](https://wordpress.org/support/users/pch101/)
 * (@pch101)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/error-server-did-not-return-valid-json-data/)
 * EDIT: For those of you who are receiving this error:
 * “Import failed because the server did not return valid JSON data. It could be
   that your server became unreachable during import. There may be more information
   in your server error_log file.”EDIT: I’ve resolved the problem: The plugin upgrade
   changed the field names. Using the new field names has resolved the problem.
 * The plugin upgrade resulted in all of the field names being changed. I would 
   suggest using the export function to get the new field names, then change your
   CSV input files accordingly.
 * Thanks.

Viewing 1 replies (of 1 total)

 *  Plugin Author [CPK Web Solutions](https://wordpress.org/support/users/cpkwebsolutions/)
 * (@cpkwebsolutions)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/error-server-did-not-return-valid-json-data/#post-5848566)
 * Hi pch101
 * Thanks for reporting the issue as well as the solution. I will try to put in 
   some extra checks to prevent old style CSV files being accepted.
 * Best wishes
 * Paul

Viewing 1 replies (of 1 total)

The topic ‘Error: "server did not return valid JSON data"’ is closed to new replies.

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## Tags

 * [Import](https://wordpress.org/support/topic-tag/import/)
 * [json](https://wordpress.org/support/topic-tag/json/)

 * 1 reply
 * 2 participants
 * Last reply from: [CPK Web Solutions](https://wordpress.org/support/users/cpkwebsolutions/)
 * Last activity: [11 years, 2 months ago](https://wordpress.org/support/topic/error-server-did-not-return-valid-json-data/#post-5848566)
 * Status: resolved