My migration back-up failed

Hi @wellythemba

In such cases, please enable debug mode on your WordPress.

In your wp-config.php set these constants:

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_DISPLAY', false );

Once you do that, refresh the page where you received error, it will show up path to the plugin or theme that causes the issue.

It’s possible that you had some plugin that does not support PHP version on new website, in such case simply remove it via FTP or update, plugin configuration will be preserved, don’t worry about that.

Our plugin tries to detect PHP conflicts but sometimes it fails as the plugin does not return fatal error on activation but only during usage.

Read more: https://ww.wp.xz.cn/documentation/article/debugging-in-wordpress/#example-wp-config-php-for-debugging