Fatal Error: Allowed memory Exhausted

Is it on every page you are having trouble with or just one or some pages? Just increasing the memory limit may not affect anything if there aren’t those resources available on the server.

If It’s just one page or a couple pages
Please try duplicating the page using this method https://docs.wpbeaverbuilder.com/beaver-builder/getting-started/bb-editor-basics/duplicate-your-beaver-builder-layout-to-another-page/#method-1-duplicate-a-page-from-the-wordpress-admin-panel

Then see if the duplicate page works. If it works, we know that the number/size of revisions for the original page are a problem as revisions are not included during the duplicate process.

The recommended steps in that case are:

• Install a revision control plugin that lets you set a limit and delete revisions beyond this limit. Some of them even let you do this on a post/page basis.
• Then, go into the BB Advanced settings and set a revision limit for BB layouts that is less than the default of (20) to try to prevent this from happening in the future
  
  If it’s all pages:

Install and activate “Health Check”: <a href=”https://ww.wp.xz.cn/plugins/health-check/”>https://ww.wp.xz.cn/plugins/health-check/</a&gt; It will add some additional feature under create a new menu position Tools > Site Health. On its troubleshooting tab, you can Enable Troubleshooting Mode. This will disable all plugins, switch to a standard WordPress theme (if available), allow you to turn your plugins on and off and switch between themes, &lt;strong>without affecting normal visitors to your site&lt;/strong>. This allows you to test for various compatibility issues. There’s a more detailed description about how to use the Health Check plugin and its Troubleshooting Mode at <a href=”https://make.ww.wp.xz.cn/support/handbook/appendix/troubleshooting-using-the-health-check/”>https://make.ww.wp.xz.cn/support/handbook/appendix/troubleshooting-using-the-health-check/</a&gt;

Using that mode, enable BB Lite and see if the issue persists. If it doesn’t, then we know that other plugins/theme are contributing to the issue.

So when you followed the instructions above, you used the troubleshooting mode of the Health Check plugin and the issue persisted with just Beaver Builder active and it was occurring on all pages?