Cant Log in into OpeEMPI .Error>> //EX[0,1,["java.lang.Exception/1920171873"],0,7]

I have just installed OpenEMPI on a remote machine.
I can acees the admin page in the browser , but whenevr i try to login with the default credentails ie admin :admin , i get this as a response ,when i check my broswer dev tools

//EX[0,1,[“java.lang.Exception/1920171873”],0,7]