Errors in plugin code

You have at least 2 errors in your code.

1. I use bad behavior plugin. It use table with a field named ‘key’. When you clone table then an error occurs:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘key FROM bio_4_bad_behavior WHERE key LIKE ….

this is because key is reserved MySQL word. You need use field names in backticks
I did not want to struggle wit it. I simply disabled BB plugin and deleted its table. After cloning I could reenable plugin and it recreate the table.

2. This is worse. This is fatal. When you enable advanced option to “Keep users and roles from duplicated site” then cloning stops before successful finish and do not copy all users. I struggled with it an hour and finally when I enabled error reporting I saw the following fatal error:

PHP Fatal error: Cannot redeclare user_array_map() (previously declared in …duplicate.php…)

This is because you declare function user_array_map() in a loop. When you relocate declaration before a loop then code works properly (duplicates all roles).

https://ww.wp.xz.cn/plugins/multisite-clone-duplicator/