Unhandled task exception: System.IndexOutOfRangeException: Index was outside the bounds of the array. at System.Diagnostics.TraceInternal.get_AppName () [0x0000e] in <e804fc8285a9419784599893ed028695>:0 at System.Diagnostics.TraceInternal.TraceEvent (System.Diagnostics.TraceEventType eventType, System.Int32 id, System.String format, System.Object[] args) [0x0003d] in <e804fc8285a9419784599893ed028695>:0 at System.Diagnostics.Trace.TraceError (System.String message) [0x00000] in <e804fc8285a9419784599893ed028695>:0 at MySql.Data.MySqlClient.MySqlTrace.LogError (System.Int32 id, System.String msg) [0x00026] in <89b4d3936e0b4e49b8d299ddbfe7933d>:0 [ script:LLL_CORE_CS] at MySql.Data.MySqlClient.MySqlPool.TryToGetDriver () [0x0002e] in <89b4d3936e0b4e49b8d299ddbfe7933d>:0 at MySql.Data.MySqlClient.MySqlPool.GetConnection () [0x0001c] in <89b4d3936e0b4e49b8d299ddbfe7933d>:0 at MySql.Data.MySqlClient.MySqlConnection.Open () [0x00245] in <89b4d3936e0b4e49b8d299ddbfe7933d>:0 at TestDB.Class1.DBTESTAsync () [0x0002f] in C:\Users\Maurice\source\repos\TestDB\TestDB\Class1.cs:22 Recreating Infos: Builder: dotnet on Debian 10.13 Code: using System; using System.Threading.Tasks; using MySql.Data.MySqlClient; namespace TEST.Server { public class ServerMain { public static void DBTEST() { var connString = "server=localhost;user=NAME; database=NAME;port=3306;password=***"; MySqlConnection conn = new MySqlConnection(connString); try { Console.WriteLine("Connecting to MySQL..."); conn.Open(); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } public ServerMain() { DBTEST(); } } }