ubuntu/ros error

edit

I have installed ros hydro and have been using it correctly. BUt after some days, I got a problem. Now whenever I open a terminal, it says:

bash: /home/mudassar/ros/setup.sh: No such file or directory bash: /opt/ros/electric/setup.bash: No such file or directory bash: /opt/ros/electric/setup.bash: No such file or directory bash: /opt/ros/electric/setup.bash: No such file or directory bash: /opt/ros/electric/setup.bash: No such file or directory

Could anyone help to resolve my issue? Is there some problem in my .bashrc file? Please be detailed as I am very new to ubuntu and ros. Thanks!