Title: Cannot upload file header.php
Last modified: March 9, 2024

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# Cannot upload file header.php

 *  Resolved [kietngo](https://wordpress.org/support/users/kietngo/)
 * (@kietngo)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-upload-file-header-php/)
 * I can’t upload my php header file to WP file manager

Viewing 1 replies (of 1 total)

 *  [file manager support](https://wordpress.org/support/users/filemanagersupport/)
 * (@filemanagersupport)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-upload-file-header-php/#post-17492729)
 * Hello kietngo,
 * We hope you are doing great.
   The error message you’re encountering, “Invalid 
   backend response. Data is not JSON,” suggests that there might be an issue with
   the file or the upload process.
 * To assist you further, please enable the debug logs and attempt to reupload the
   file again. This will log the error. Additionally, please let us know where (
   location/path) you’re trying to upload the file from.
 * Furthermore, if possible, could you please share the header.php file with us?
 * Once we receive the debug logs and the header.php file at [support@filemanagerpro.io](https://wordpress.org/support/topic/cannot-upload-file-header-php/support@filemanagerpro.io?output_format=md),
   we will be able to better understand the issue and provide a more accurate solution.
 * Regards,
   WP File Manager Support Team

Viewing 1 replies (of 1 total)

The topic ‘Cannot upload file header.php’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [file manager support](https://wordpress.org/support/users/filemanagersupport/)
 * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-upload-file-header-php/#post-17492729)
 * Status: resolved