How to resolve exception "MQRC_KEY_REPOSITORY_ERROR" while connecting to MQ manager in ASP.NET with C#?

<add key="MQ_MANAGER" value="HBAX013D"/>
   <add key="MQ_CHANNEL" value="DDS.SVR.CONN.SSL.CHL"/>
   <add key="MQ_CONNECTION" value="10.10.182.37(1514)"/>
   <add key="MQ_REPLY" value="DDS.REPLY"/>
   <add key="MQ_REQUEST" value="GEN.DISPATCHER.REQ"/>
   <add key="SSL_ALGORITHM" value="RC4_SHA_US"/>
   <add key="SSL_KEYLOCATION" value="C:\WMQClient\SSL\key12\key"/>

try
           {

               if (chkSSLEnbled.Checked == true)
               {
                   MQEnvironment.SSLCipherSpec = txtCipherSpec.Text;
                   MQEnvironment.SSLKeyRepository = txtKeyRepository.Text;
               }
               //WriteLog("writeMessage: Connecting to DDS MQ Manager..", false);
               txtLog.Text += "btnConnect_Click()-Connecting to MQ Managaer" + Environment.NewLine;

               objMQQueueManager = new IBM.WMQ.MQQueueManager(txtMqManager.Text, txtMQChannel.Text, txtMqConnection.Text);

               objMQQueue = objMQQueueManager.AccessQueue(txtMQName.Text, MQC.MQOO_INQUIRE | MQC.MQOO_OUTPUT | MQC.MQOO_FAIL_IF_QUIESCING | MQC.MQOO_SET_IDENTITY_CONTEXT);
               //WriteLog("writeMessage: Connected to DDS MQ MAnager..", false);
               txtLog.Text += "btnConnect_Click()-Connected to MQ Manager" + Environment.NewLine;

           }
           catch (Exception ex)
           {
               txtLog.Text += "btnConnect_Click()-MQ Connectivity Process Failed with Exception: " + ex.Message
                             + Environment.NewLine + " with Inner Exception:" + ex.InnerException
                             + Environment.NewLine + " at Stack Trace: " + ex.StackTrace + Environment.NewLine;
           }
       }