Title: Compatibility issue, this plugin causes loopback failure
Last modified: November 30, 2019

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# Compatibility issue, this plugin causes loopback failure

 *  [gomilky](https://wordpress.org/support/users/gomilky/)
 * (@gomilky)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/compatibility-issue-this-plugin-causes-loopback-failure/)
 * I noticed problem when trying to edit php files. in wordpress > 4.9 (IIRC) wordpress
   checks if editing php files in theme edit causes issues. when this plugin enabled,
   it causes loopback failure with following error : “Unable to communicate back
   with site to check for fatal errors, so the PHP change was reverted” disabling
   this plugin works. so there is issue here interfering with wordpress loopback
   connection.
 * To reproduce the error, have the latest wordpress with this plugin enabled and
   try to edit and save header.php in theme file editor

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 * 1 participant
 * Last reply from: [gomilky](https://wordpress.org/support/users/gomilky/)
 * Last activity: [6 years, 6 months ago](https://wordpress.org/support/topic/compatibility-issue-this-plugin-causes-loopback-failure/)
 * Status: not resolved