Made changes to .bashrc and now linux commands are not working

I made changes in my .bashrc file to update the PATH and include KAFKA_HOME, now none of linux commands are working ls or vi .Please let me know what was wrong in my change .

[devpratha@gw01 ~]$ ls
bash: ls: command not found…
Similar command is: ‘lz’

@Pratha Now everything set for your account. Don’t change any thing in .bashrc. If you have any query regard paths just rise a topic here.

Thank You. But in that training for Spark streaming the KAFKA_HOME was set in bashrc . Should i set using export at the command line ?