MySQL connector doesnt work when the game is build in WebGL

I have developed a game in unity3d version 2019.1.1 which uses SQLconnector to establish connection to (localhost) DB , get and transfer data back and fourth. When im running the game from the platform everything works fine , but when i build the game for WEBGL and run it from the browser i get this exception from the browser’s console :

System.TypeInitializationException: The type initializer for 
'MySql.Data.MySqlClient.Replication.ReplicationManager' threw an 
exception. ---> System.TypeInitializationException: The type initializer 
for 'MySql.Data.MySqlClient.MySqlConfiguration' threw an exception. ---> 
System.NotSupportedException: 
System.Configuration.ConfigurationManager::GetSection

also i get this error:

MySql.Data.MySqlClient.MySqlException (0x80004005): Exception of type 
'MySql.Data.MySqlClient.MySqlException' was thrown. ---> 
System.Net.Sockets.SocketException (0x80004005): Success
at System.Net.Sockets.Socket..ctor (System.Net.Sockets.AddressFamily 
addressFamily, System.Net.Sockets.SocketType socketType, 
System.Net.Sockets.ProtocolType protocolType) [0x00000] in 
<00000000000000000000000000000000>:0 
at MySql.Data.MySqlClient.NativeDriver.Open () [0x00000] in 
<00000000000000000000000000000000>:0 

I have downloaded mysql connector dll’s from mysql site. “mysql-connector-net-8.0.16-noinstall”
also tried older version just to check , still same.

I have also included the files :

“all I18N” in my plugins , as been stated from various answers in this subject".

Scripting runtime version : 4.X net API compatible : 4.X v2 net

What am i missing ?
I working on these games 1 month or so , kind of bigginer.

i know that i can use php and wwwForm for the db connection and that its not safe programming , but its just a training project .

I have checked every article in the web for this kind of errors and i cant get what im doing wrong.

Anything in the System.Net.Sockets namespace is unsupported in WebGL. See the docs here for more info.