Canon EOS Rebel T6i Instruction Manual page 152

Responding to Error Messages
127: An error has occurred
A problem other than error 121 to 126 occurred during the

connection to the Web service.
Try connecting to the Web service again.

141: Printer is busy. Try connecting again.
Is the printer performing a printing process?

Connect to the printer again after the printing process is finished.

Is another camera connected to the printer?

Connect to the printer again after the connection between the

printer and the other camera has been terminated.
142: Could not acquire printer information. Reconnect to
try again.
Is the power of the printer on?

 Connect to the printer again after turning on the printer.
152