Title: Error comparing snapshot Last modified: November 9, 2019 --- # Error comparing snapshot * Resolved [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/) * Not a great start investigating this plugin. Installed it (no errors), saved a snapshot (no errors), changed a single checkbox in on plugin (WPFusion) and then tried to compare the snapshot with the current tables. Received this error. * ‘An error has occurred. Snapshot data has been compromised. Saved metadata does not match data in the DB. Contact WP Reset support if data is critical, or restore it via a MySQL GUI.” * I haven’t done anything else at all with the plugin (this was the first thing I tried, since it’s an important scenario for me). * Running WordPress 5.2.4. * Any ideas on why this occurred and how to resolve. Viewing 14 replies - 1 through 14 (of 14 total) * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12114500) * I created another snapshot and now I receive the following when I try to compare it. * “An undocumented error has occurred. Please refresh the page and try again.” * So haven’t been able to do anything concrete with the plugin yet. * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12114606) * Hi, thank you for giving WPR a try. Sorry to hear you’re having problems 🙁 * Can you please share the list of active plugins on that site? * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12114813) * Thank you for the response. I have deactivated all plugins except WP Reset but still receive this error. My theme is the latest version of Astra. I have tried with Trenty Nineteen, though, but the problem remains. * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12115505) * Thank you for testing that. So it’s not a conflict with any other plugins or the theme. That’s good and bad news in one 🙂 * A new version of the plugin will be out either early Monday or Tuesday morning and will have some improvements in for snapshots. So hopefully that will fix it. * Aside from that, I have one more idea. When you do a compare, can you please open the console and see what the response for the AJAX request is? Is it a valid JSON object or are there some extra errors printed in the response. If you need more info on how to do that, let me know. * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12116727) * Thank you again. Yes, dev tools reports this as a 500 error. * [https:///wp-admin/admin-ajax.php?action=wp_reset_run_tool&_ajax_nonce=bd8f705943&tool=compare_snapshots&extra_data=3b8a7b](https:///wp-admin/admin-ajax.php?action=wp_reset_run_tool&_ajax_nonce=bd8f705943&tool=compare_snapshots&extra_data=3b8a7b) * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12116738) * This error is reported in the debug log… * Failed opening required ‘../wp-content/plugins/wp-reset/libs/Diff/SequenceMatcher. php’ (include_path=’.:’) in /…/wp-content/plugins/wp-reset/libs/diff.php on line 174 * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12116755) * Also found this earlier in the debug log. * Cannot declare class Diff, because the name is already in use in /home/xxx/webapps/ xxx/wp-content/plugins/wp-reset/libs/diff.php on line 46 * By the way, after finding these errors I deleted and downloaded/activated the plugin again, but the problem remains. The error above occurred when I first installed the plugin but not since, even though it’s been deleted and installed again since. - This reply was modified 6 years, 6 months ago by [markwill](https://wordpress.org/support/users/markwill/). * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12116891) * Thank you for the detailed report! * Good news – the “Cannot declare class Diff” has already been fixed! It’s in this next release. We’re putting finishing touches on it. I’ll let you know as soon as it’s out. * The other bug, with the missing file. Not quite sure what to tell you 🙁 File is definitely in the plugin ZIP and we haven’t heard any other reports on it. And since you reinstalled … even if it broke the first time it should have unpacked properly. I’ll have my colleague have a look, and circle back to you ASAP. * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12116907) * Thank you. Very eager to try this out properly, so I look forward to the update. * I, too, was / am confused by the missing file, since I see it exactly where I would expect it to be. I have no explanation of that. * Thank you again. * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12117550) * Found the other bug!!! In 2 years nobody saw it or reported 🙁 * Will let you know once we have the new version up. * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12118851) * Thank you. Can you give me a rough idea of how long we’re looking at? I purchased the LTD (5 sites) but 3 days in haven’t been able to use the plugin yet, so hope to have a good chance to use and assess your plugin. * Thank you. * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12118936) * This is the free version, not PRO. Completely different code-base … For everything PRO related please email us and our support staff will help you ASAP. * Update for free will be available tomorrow. * Thread Starter [markwill](https://wordpress.org/support/users/markwill/) * (@markwill) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12118942) * Thank you. I was assuming there was some commonality and this is my first exposure to your app. I will write to support about the Pro version. * Thank you. * Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/) * (@webfactory) * [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12118952) * In general, commonality – yes. But in this particular case – not that much 🙂 * You’re welcome 👋🏻 Viewing 14 replies - 1 through 14 (of 14 total) The topic ‘Error comparing snapshot’ is closed to new replies. * ![](https://ps.w.org/wp-reset/assets/icon-256x256.png?rev=1906468) * [WP Reset](https://wordpress.org/plugins/wp-reset/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-reset/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-reset/) * [Active Topics](https://wordpress.org/support/plugin/wp-reset/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-reset/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-reset/reviews/) * 14 replies * 2 participants * Last reply from: [WebFactory](https://wordpress.org/support/users/webfactory/) * Last activity: [6 years, 6 months ago](https://wordpress.org/support/topic/error-comparing-snapshot/#post-12118952) * Status: resolved