Title: Random Fatal Error in datamapper Last modified: August 24, 2016 --- # Random Fatal Error in datamapper * [Logan Yott](https://wordpress.org/support/users/loganyott/) * (@loganyott) * [11 years, 2 months ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/) * Hello, * WP v4.2.1 nextgen-gallery v2.0.79 host: Pantheon * I recently switched my site to a WordPress subdirectory installation. I had to update from Nextgen-gallery v2.0.4* to v2.0.79, as the older version used a method of URL discovery that was incompatible with a subdirectory installation. * I now get a `Fatal error: Call to a member function get_entity() on a non-object in /path/to/wp/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/ modules/datamapper/package.module.datamapper.php on line 359` seemingly randomly. The error appears on the first or second page load, yet subsequent page loads appear to not have the problem. If I wait a few minutes and try another page load, the error comes back. * I have found that the `$new_entity` referenced in the line is `NULL` when this error occurs, hence it not having that member function. * I have tried downgrading to earlier versions of WP with no success. I would try downgrading ngg, but I’m not sure which version the subdirectory issue was fixed. * Any idea on what could be causing this error? Thanks! * [https://wordpress.org/plugins/nextgen-gallery/](https://wordpress.org/plugins/nextgen-gallery/) Viewing 6 replies - 1 through 6 (of 6 total) * Thread Starter [Logan Yott](https://wordpress.org/support/users/loganyott/) * (@loganyott) * [11 years, 2 months ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6096972) * I checked out version 2.0.81 from your bitbucket repo (hoping maybe this problem would disappear). * While the error location changed, it appears to be the same thing happening. ` Fatal error: Call to a member function get_entity() on a non-object in /path/ to/wordpress/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/ datamapper/class.custompost_datamapper_driver.php on line 390` * Any ideas would be appreciated! Alternatively, if I should insert a logic check here and submit a PR, let me know and I will be happy to do so. * Plugin Contributor [photocrati](https://wordpress.org/support/users/photocrati/) * (@photocrati) * [11 years, 2 months ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097072) * [@logan](https://wordpress.org/support/users/logan/) Yott – A PR would always be welcome, we do appreciate contributions from the community … but given this is a “migrated” site (and there appears to be a possible caching issue at hand) have you tried the Reset Option under Gallery > Other Options and/or clearing the image cache under Gallery > Other Options > Miscellaneous? * – Cais. * Thread Starter [Logan Yott](https://wordpress.org/support/users/loganyott/) * (@loganyott) * [11 years, 2 months ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097123) * Hi Cais, * I tried Reset Option and clearing the image cache and I’m still getting the error. I haven’t been able to see it locally, so I’m assuming it must be related to Pantheon’s distributed filesystem? I’ll see if I can get a stack trace of the issue. * Plugin Contributor [photocrati](https://wordpress.org/support/users/photocrati/) * (@photocrati) * [11 years, 2 months ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097149) * [@logan](https://wordpress.org/support/users/logan/) Yott – Ah, Pantheon … we just had a recent report on it not working so well with NextGEN Gallery although I believe we have made some progress and should have those updates in our next release due out soon. * – Cais. * Thread Starter [Logan Yott](https://wordpress.org/support/users/loganyott/) * (@loganyott) * [11 years ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097276) * Is that report in a support thread? Running into a few more issues but I want to see if they’ve already been reported/worked on before creating new threads. * Thanks! * Plugin Contributor [photocrati](https://wordpress.org/support/users/photocrati/) * (@photocrati) * [11 years ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097278) * [@logan](https://wordpress.org/support/users/logan/) Yott – There is only a reference in our internal notes in this case … as it is, have you updated to the latest release of NextGEN Gallery to see if that helps with the issues you are seeing? * – Cais. Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Random Fatal Error in datamapper’ is closed to new replies. * ![](https://ps.w.org/nextgen-gallery/assets/icon-256x256.png?rev=2083961) * [Photo Gallery, Sliders, Proofing and Themes - NextGEN Gallery](https://wordpress.org/plugins/nextgen-gallery/) * [Frequently Asked Questions](https://wordpress.org/plugins/nextgen-gallery/#faq) * [Support Threads](https://wordpress.org/support/plugin/nextgen-gallery/) * [Active Topics](https://wordpress.org/support/plugin/nextgen-gallery/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/nextgen-gallery/unresolved/) * [Reviews](https://wordpress.org/support/plugin/nextgen-gallery/reviews/) * 6 replies * 2 participants * Last reply from: [photocrati](https://wordpress.org/support/users/photocrati/) * Last activity: [11 years ago](https://wordpress.org/support/topic/random-fatal-error-in-datamapper/#post-6097278) * Status: not resolved