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First of all deactivate all your WordPress plugins.

If you are not able to login to your WordPress dashboard due to 503 service error, then you have to go to your webhosting cPanel and click on File Manager, then go to root directory and rename wp-content >> plugins folder. For example plugins_old.


Now visit your WordPress site. If your site is now opening then this 503 service unavailable error was caused by the plugin.

To find out which plugin was causing the service unavailable error, you will have to go to the /wp-content/ folder and rename the plugins_old folder to plugins again.

Log in to your WordPress dashboard then go to the plugins page. Here you will get all the plugins deactivate. Activate each of the plugins one by one and also visit 3-4 pages of your website.
20 days ago   0