Quote Originally Posted by mc12345678 View Post
May want to provide more information about your XAMP setup, while this site is predominantly for the care of the eCommerce software and database, there may be more assistance available to help.

Right now it looks like either a table or portion of the database has been defined to a collation that just doesn't exist or to one that is not supported by the installed software... in either case it should be resolvable.
phpAdmin 5.1

Server: 127.0.0.1 via TCP/IP
Server type: MariaDB
Server connection: SSL is not being used Documentation
Server version: 10.4.21-MariaDB - mariadb.org binary distribution
Protocol version: 10
User: root@localhost
Server charset: UTF-8 Unicode (utf8mb4)

XAMPP for Windows 7.4.25

Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/7.4.25
Database client version: libmysql - mysqlnd 7.4.25
PHP extension: mysqli Documentation curl Documentation mbstring Documentation
PHP version: 7.4.25