try fix ErrorInfo not suplied

EVCB_OCPP.WSServer/Helper/DbExtention.cs

@@ -39,8 +39,8 @@ namespace EVCB_OCPP.WSServer.Helper
 
         public static void AddInsertMeterValueRecordSqlParameters(this List<SqlParameter> sqlParameters,
             string chargeBoxId, byte connectorId, decimal value, DateTime createdOn
-            ,int contextId, int formatId, int measurandId, int phaseId
-            ,int locationId,int unitId,int transactionId)
+            , int contextId, int formatId, int measurandId, int phaseId
+            , int locationId, int unitId, int transactionId)
         {
             List<SqlParameter> parameter = new List<SqlParameter>
             {
@@ -56,28 +56,26 @@ namespace EVCB_OCPP.WSServer.Helper
                 new SqlParameter("UnitId", SqlDbType.Int) { Value = unitId },
                 new SqlParameter("TransactionId", SqlDbType.Int) { Value = transactionId },
             };
-            sqlParameters.AddRange(parameter);
-		}
-
-
-		public static void AddInsertConnectorStatusRecordSqlParameters(this List<SqlParameter> sqlParameters,
-		   string chargeBoxId, byte connectorId, int status, DateTime createdOn
-		   , string errorInfo, string vendorId, string vendorErrorCode, int chargePointErrorCodeId)
-		{
-			List<SqlParameter> parameter = new List<SqlParameter>
-			{
-				new SqlParameter("ChargeBoxId", SqlDbType.NVarChar, 50){ Value = chargeBoxId },
-				new SqlParameter("ConnectorId", SqlDbType.TinyInt) { Value = connectorId },
-				new SqlParameter("Status", SqlDbType.Int){ Value = status },
-				new SqlParameter("CreatedOn", SqlDbType.DateTime) { Value = createdOn },
-				new SqlParameter("ChargePointErrorCodeId", SqlDbType.Int) { Value = chargePointErrorCodeId },
-				new SqlParameter("ErrorInfo",SqlDbType.NVarChar, 50){ Value = errorInfo },
-				new SqlParameter("VendorId", SqlDbType.NVarChar, 255){ Value = vendorId },	
-				new SqlParameter("VendorErrorCode", SqlDbType.NVarChar, 100) {Value =vendorErrorCode },
-
-
-			};
-			sqlParameters.AddRange(parameter);
-		}
-	}
+            sqlParameters.AddRange(parameter);
+        }
+
+
+        public static void AddInsertConnectorStatusRecordSqlParameters(this List<SqlParameter> sqlParameters,
+           string chargeBoxId, byte connectorId, int status, DateTime createdOn
+           , string errorInfo, string vendorId, string vendorErrorCode, int chargePointErrorCodeId)
+        {
+            List<SqlParameter> parameter = new List<SqlParameter>
+            {
+                new SqlParameter("ChargeBoxId", SqlDbType.NVarChar, 50){ Value = chargeBoxId },
+                new SqlParameter("ConnectorId", SqlDbType.TinyInt) { Value = connectorId },
+                new SqlParameter("Status", SqlDbType.Int){ Value = status },
+                new SqlParameter("CreatedOn", SqlDbType.DateTime) { Value = createdOn },
+                new SqlParameter("ChargePointErrorCodeId", SqlDbType.Int) { Value = chargePointErrorCodeId },
+                new SqlParameter("ErrorInfo",SqlDbType.NVarChar, 50){ Value = errorInfo is null ? DBNull.Value : errorInfo },
+                new SqlParameter("VendorId", SqlDbType.NVarChar, 255){ Value = vendorId },
+                new SqlParameter("VendorErrorCode", SqlDbType.NVarChar, 100) {Value =vendorErrorCode },
+            };
+            sqlParameters.AddRange(parameter);
+        }
+    }
 }