How to fix critical error issue in wp site because of wordpress plugin

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 i intall plugin for obeject cash thet use memecashe i m not sure it uther what version the plugin naem for object cash for everyone as soon as intsalled my siote not loading it says critical error how can i dispabel thhat plugin without using backup just login to cpanle how can i disable that plugin

You can quickly disable the plugin directly from cPanel by renaming its folder, which forces WordPress to deactivate it safely without breaking the rest of your site.
Here is exactly how to do it:
Step 1: Open File Manager in cPanel
  1. Log in to your cPanel dashboard.
  2. Search for and click on File Manager.
Step 2: Locate Your Plugin Folder
  1. On the left sidebar, double-click public_html (or the folder where your website is installed).
  2. Open the wp-content folder.
  3. Open the plugins folder.
  4. Find the folder named object-cache-for-everyone (or similar, based on the plugin name).
Step 3: Rename the Folder
  1. Right-click the plugin folder and select Rename.
  2. Add _old or _disabled to the end of the name (for example: object-cache-for-everyone_old).
  3. Save the changes.
Step 4: Clear the Cache File (Crucial for Object Cache Plugins)
Object cache plugins drop a specific file directly into the wp-content folder that will keep causing the error even if the plugin folder is renamed.
  1. Go back up one level to the wp-content folder.
  2. Look for a file named object-cache.php.
  3. Right-click it and select Delete (you can safely move it to the trash).
Your website should now load normally. Once you can log back into your WordPress dashboard, you can safely delete the broken plugin from your Plugins page

awesome it works now i can access so are you able to figure out why my site went to critical error when i install this Object Cache 4 everyone by fpuenteonline  that use memcache but you ealier said memcache now old version new is memcached so would this was the issue should try again with memcached extention turns on? also extention section when i try to disbale older version memcache unchekc mark that did not work either it not get disabled is that i install this new plugin or what? can you break down give me steps to fix?
Yes, you hit the nail on the head. The mismatch between the PHP extensions and the plugin requirements is exactly what triggered your site's critical error. [1]
To clarify, the plugin "Object Cache 4 everyone" by fpuenteonline actually requires the modern memcached extension (not the old memcache one). [1]
When you activated the plugin while having the wrong extension active in cPanel, the plugin tried to execute code for an extension that didn't exist or wasn't running, resulting in a fatal PHP crash. [1, 2]
Why the old "memcache" checkbox won't uncheck
Your host likely enforces a server policy where the deprecated memcache extension is locked or natively disabled behind the scenes, making the checkbox unresponsive. Do not worry about this—as long as your modern memcached extension is active, WordPress will default to the correct one.
Step-by-Step Blueprint to Fix and Enable Safely
Follow these exact steps to get your object caching working cleanly without causing another crash:
Step 1: Prepare cPanel Extensions
  1. Log into cPanel and go back to Select PHP Version.
  2. Navigate to the Extensions tab.
  3. Make sure the box for memcached (with the d at the end) is firmly checked.
  4. Ignore the old memcache box completely since it cannot be changed. [1]
Step 2: Clean up the Plugin Names in File Manager
Before trying again, your website needs to recognize the plugin properly.
  1. Open cPanel File Manager and go to public_html/wp-content/plugins/.
  2. Find the folder you renamed earlier (e.g., object-cache-for-everyone_old).
  3. Rename it back to its exact original name: object-cache-4-everyone. [1]
Step 3: Activate via WordPress Dashboard [1]
  1. Log into your WordPress Admin Dashboard (://yourdomain.com).
  2. Go to Plugins > Installed Plugins.
  3. Find Object Cache 4 everyone and click Activate. [1, 2]
Because you successfully enabled memcached in Step 1, the plugin will now automatically detect the extension, generate a fresh, working object-cache.php drop-in file, and load your site flawlessly without a critical error. [1, 2]

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