Hi @RocktimRamenDas. I love your user profile - makes me miss the ocean!
Thank you for sharing that screenshot. It has all the details you need to figure out why this command didn't work. Try to puzzle it out one more time, and post here if you still can't get it. I'll watch this post, and can answer any questions you have.
Like @thermokarst suggested in this post, often the best approach is to carefully read your error messages, and investigate the commands you ran. Computers are dumb, so we have to be extra careful when we tell them what we want them to do. I make little mistakes like this all the time, and it will make your life much easier when you can identify and fix them independently.
Hint: Often when you issue a command to QIIME 2, the arguments you pass it are file paths. Always make sure your file paths tell QIIME 2 where your files actually are.
Good luck, and please let me know if you have any questions!
Chris