CLONE - Incorrect error message in ij for disconnect with no active connections

Using ij, before connecting to the database, when the disconnect command is issued, the error message which is printed is:IJ ERROR: Unable to establish connection

bash-3.00# ij
ij version 10.4
ij> disconnect;
IJ ERROR: Unable to establish connection

The error message should be changed to "No connection available" for a better understanding.