Checking if another SDM is running on port 50018

Hello,

I am trying to install SP19 in portal. So when i am trying to instal the Web as upgrade i get the next log.

Checking if another SDM is running on port 50018

Mar 30, 2007 5:33:11 PM  Error: Could not start SDM - another Server may be running already.

Mar 30, 2007 5:33:11 PM  Error: Another SDM is running already for this SDM_HOME directory. Exiting. Throwable: com.sap.sdm.client_server.launch.SDMRunningException Throwable message: Another SDM instance is running on this host

Mar 30, 2007 5:33:11 PM  Error: Processing error. Return code: 4

Can you help us? i will thank you your best efforts!

           Best Regards,

               João Fernandes