Batch file crash unexpectedly only after executing 1 command

@echo off

echo -----------------************************----------------------

set /p empid="Enter Your Employee Id = "

set /p password="Enter Password = "

echo executing commands.....

npm config set proxy

echo ....

npm config set https-proxy

echo Done!


cmd close after executing -> "npm config set proxy"

I'am not sure this command execute successfully or not.

I think the problem starts from "" here @ is creating problem, any suggestion to execute same command.