Why is this error showing when connecting to tn3270 from mochasoft?

I want to learn mainframe automation for which i have downloaded tn3270 from mocha soft which connects to ibm mainframe. but after installing , when i am connecting it, it is showing this error.what could be the possible problem? what is the ip address that i should give for that? help out

i got it now.it is solved. i had put wrong ip address.i downloaded the tn5250 and gave the ip address and it got connected. but new problem is, it is not getting signed in after i am putting my password

even after entering the password now, this is showing.please help

No reply till now :cry:

Don’t use a third party client. Use Direct Connection in your Terminal Session. UiPath has its own built-in client and it works great.