Solution:
Case 1 : You can Access Admin
- Remove htaccess from root
- Login into admin update paramlinks
- deactive and active theme you are using.
Case 2 : You can’t Access Admin (Try With FTP)
- Disable Pluginsyour plugins by simply renaming the
pluginsdirectory toplugins.old - Disable Theme
if you rename your active theme the same way we renamed plugins, WordPress will automatically fall back to using a default WordPress theme.
- Enable DebuggerWP_DEBUG, it’s a constant that you can add to your wp-config.php file on your website, that will output any specific errors that are occurring on the site the same way the Windows blue screen does.
That’s it.