Getting file not found error

Where is your Excel file located? Is it in the project folder or outside?

Keep in mind that you need to take in consideration the file path especially if the project moves around from station to another, your choices are absolute or relative path.

Using the project relative path for files included inside the project folder, and use absolute path for files residing outside of the project folder. For the absolute path you will need to construct it especially when the project moves around from station to another, for example user home path folder.