Title: PHP fatal error: licenser.php missing Last modified: September 22, 2021 --- # PHP fatal error: licenser.php missing * Resolved [Cris](https://wordpress.org/support/users/cris-tarta/) * (@cris-tarta) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/) * Hi Jordy, * I recently had to manually deactivate this plugin as it was causing a php warning/ fatal error preventing the site from running at all. I assume it had something to do with a recent update – cannot say how long the site was down (upwards of 1 week perhaps?). * Enabling the plugin results in the following warning and fatal error: * ``` PHP Warning: require(/wp-content/plugins/meow-lightbox/common/licenser.php): failed to open stream: No such file or directory in /wp-content/plugins/meow-lightbox/classes/init.php on line 31 Warning: require(/wp-content/plugins/meow-lightbox/common/licenser.php): failed to open stream: No such file or directory in /wp-content/plugins/meow-lightbox/classes/init.php on line 31 ``` * ``` PHP Fatal error: require(): Failed opening required '/wp-content/plugins/meow-lightbox/common/licenser.php' (include_path='.:/usr/share/php') in /wp-content/plugins/meow-lightbox/classes/init.php on line 31 Fatal error: require(): Failed opening required '/wp-content/plugins/meow-lightbox/common/licenser.php' (include_path='.:/usr/share/php') in /wp-content/plugins/meow-lightbox/classes/init.php on line 31 ``` * I checked the plugin directory and the file does not seem to be there. I deleted and reinstalled the plugin using the WP admin interface and the issue persists. * Is this a known issue? Thanks for your help! - This topic was modified 4 years, 8 months ago by [Cris](https://wordpress.org/support/users/cris-tarta/). Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Author [Jordy Meow](https://wordpress.org/support/users/tigroumeow/) * (@tigroumeow) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14896697) * Hi [@cris-tarta](https://wordpress.org/support/users/cris-tarta/), * Sorry about that 🙁 This is weird, those files are only part of the Pro version and shouldn’t be loaded on the Free versions, as they are not needed. * What are the plugins currently installed? Are you using another plugin from me? * Thread Starter [Cris](https://wordpress.org/support/users/cris-tarta/) * (@cris-tarta) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14896790) * Thanks for the quick reply. * Yes, I have the following additional apps: 1. Perfect Images (Pro) **v.6.1.7** 2. Photo Engine (WP/LR Sync) **v.6.1.1** 3. WP/LR Theme Assistant **v.0.5.4** * I was able to get it working (temporarily) by manually copying the file from the Perfect Images (Pro) `/common/` directory. This still gives a `500` error on the admin page though – but at least the public-facing side works as expected. * I’ve had all plugins for a few years and everything has been running on auto- update since. - This reply was modified 4 years, 8 months ago by [Cris](https://wordpress.org/support/users/cris-tarta/). * Plugin Author [Jordy Meow](https://wordpress.org/support/users/tigroumeow/) * (@tigroumeow) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14897371) * Hi, * I see exactly what the problem is, and indeed, I currently have a little compatibility issues with different version of my common libraries. I had to do something after some of my code was not following some WordPress Repository rules, but that makes things a tad more complex. * I would like to send you new versions for all those plugins directly. Would you mind contacting me directly? * Here: [https://meowapps.com/contact/](https://meowapps.com/contact/) * Let’s make sure it works perfectly for you 🙂 * Thread Starter [Cris](https://wordpress.org/support/users/cris-tarta/) * (@cris-tarta) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14898410) * Ah ok. * Thanks again for looking into the issue and for the awesome support! * Email sent. * Cheers * [Mythical Dean](https://wordpress.org/support/users/timetomosey/) * (@timetomosey) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14902685) * Hello Jordy, * I’m having a similar issue that started out with trying to activate the free version of Media File Renamer (yesterday). Today I am able to activate Media File Renamer (free) but now I cannot activate the Pro version of Meow Lightbox– I instantly get the same WP white screen with “There has been a critical error on this website…” error message. * I have sent you an email directly (online contact page). I hope to hear from you soon. Thank you * Plugin Author [Jordy Meow](https://wordpress.org/support/users/tigroumeow/) * (@tigroumeow) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14903809) * Hi everyone, * If you run into this issue, I wrote a blog post about it here: [https://meowapps.com/php-fatal-error-licenser-missing/](https://meowapps.com/php-fatal-error-licenser-missing/) * If that doesn’t fix it, please comment on the blog post, and I will update the article (and also reply to you of course). * [Mythical Dean](https://wordpress.org/support/users/timetomosey/) * (@timetomosey) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14903881) * Yes, following your “How to fix it?” on your blog post, resolved all the issues I was having.  Thank you so much for providing this! Take care. * Plugin Author [Jordy Meow](https://wordpress.org/support/users/tigroumeow/) * (@tigroumeow) * [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14903882) * Thank you [@timetomosey](https://wordpress.org/support/users/timetomosey/), I am really glad 🙂 Take care too! Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘PHP fatal error: licenser.php missing’ is closed to new replies. * ![](https://ps.w.org/meow-lightbox/assets/icon-256x256.gif?rev=3004933) * [Meow Lightbox](https://wordpress.org/plugins/meow-lightbox/) * [Frequently Asked Questions](https://wordpress.org/plugins/meow-lightbox/#faq) * [Support Threads](https://wordpress.org/support/plugin/meow-lightbox/) * [Active Topics](https://wordpress.org/support/plugin/meow-lightbox/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/meow-lightbox/unresolved/) * [Reviews](https://wordpress.org/support/plugin/meow-lightbox/reviews/) ## Tags * [PHP Fatal error](https://wordpress.org/support/topic-tag/php-fatal-error/) * 8 replies * 3 participants * Last reply from: [Jordy Meow](https://wordpress.org/support/users/tigroumeow/) * Last activity: [4 years, 8 months ago](https://wordpress.org/support/topic/php-fatal-error-licenser-php-missing/#post-14903882) * Status: resolved