Problem in reading files - Google Colab

i am not getting output. please let me know why i am not getting. i have tried a lot of times this again and again.

Probably your file is empty. Please check it once.

i have myself written in the files. and also i have tried this by changing the .txt file also. please try to solve this as my progress is stuck at this.

i again worked with random file but no result.

Hi team, when I double click any file , it doesn’t get open in Notebook like it happens in video. However, it does get downloaded.So, is there anything I am missing ?