Title: Undefined array key “uniqueId” Last modified: May 17, 2023 --- # Undefined array key “uniqueId” * Resolved [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/) * Dear Developers, * There is this warning on my homepage. * `Warning: Undefined array key "uniqueId" in /wp-content/plugins/generateblocks/ includes/blocks/class-container.php on line 945` * What can cause this? I’ve tried to turn off every plugins, the warning still there. * I know I can hide this wawrning if I disable `WP_DEBUG` but I want to make my new site without any PHP warnings. * Best regards, Gergo Simko Viewing 12 replies - 1 through 12 (of 12 total) * Plugin Support [David](https://wordpress.org/support/users/diggeddy/) * (@diggeddy) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16744728) * Hi there, * can you share a link to the site where the error can be seen ? * Thread Starter [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16747606) * Yes, of course! [https://dev.vitalharmony.hu/ ](https://dev.vitalharmony.hu/) * [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * (@fernandoazarcon2) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16747631) * Hi [@simkog](https://wordpress.org/support/users/simkog/), * All Blocks should have an ID when added through the editor. Did you edit a Block of yours? In the Editor, do all blocks appear? * Thread Starter [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16747665) * Dear [@fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/), * Yes, I can see all the blocks in the editor. * The other problem is that when I sent the link to you, I could see a warning on the front page. However, it has now disappeared. I haven’t made any changes since then. * [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * (@fernandoazarcon2) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16747686) * What version of GB are you using? Are you also using GB Pro? * Thread Starter [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16747865) * GenerateBlocks free only, and the version is the latest (1.7.3). * I can finally confirm, that the warning only appears when the admin user is logged off. * Plugin Support [David](https://wordpress.org/support/users/diggeddy/) * (@diggeddy) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16748377) * Has that page been edited in the Code Editor view? Ie. the HTML of those blocks been edited. * Thread Starter [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16748950) * Dear [@diggeddy](https://wordpress.org/support/users/diggeddy/), I have never used the Code Editor View. * [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * (@fernandoazarcon2) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16750122) * That’s really odd. Did this issue just appear or was it appearing before? If it just appeared, what Block did you add? Can you try removing or recreating those to test? * Does this issue appear on any other page with GenerateBlocks? * Thread Starter [simkog](https://wordpress.org/support/users/simkog/) * (@simkog) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16750589) * Dear [@fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/), I did not notice this warning warning while creating the page, just after finished that. So I do not know, which block caused the warning. * [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * (@fernandoazarcon2) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16750615) * What you can do is to duplicate or copy and paste all the content of this page to a test page. Then try to delete section by section one by one until the issue disappears. Then, hopefully, we’ll find the problematic Block. * [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * (@fernandoazarcon2) * [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16803060) * Hi there! We haven’t heard back from you for a while now so we’re going to go ahead and set this topic as resolved. Feel free to reply if you need any more help. Viewing 12 replies - 1 through 12 (of 12 total) The topic ‘Undefined array key “uniqueId”’ is closed to new replies. * ![](https://ps.w.org/generateblocks/assets/icon.svg?rev=3239461) * [GenerateBlocks](https://wordpress.org/plugins/generateblocks/) * [Frequently Asked Questions](https://wordpress.org/plugins/generateblocks/#faq) * [Support Threads](https://wordpress.org/support/plugin/generateblocks/) * [Active Topics](https://wordpress.org/support/plugin/generateblocks/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/generateblocks/unresolved/) * [Reviews](https://wordpress.org/support/plugin/generateblocks/reviews/) * 12 replies * 3 participants * Last reply from: [fernandoazarcon2](https://wordpress.org/support/users/fernandoazarcon2/) * Last activity: [3 years ago](https://wordpress.org/support/topic/undefined-array-key-uniqueid/#post-16803060) * Status: resolved