Starting... I had no idea how I could contribute, create, and fix an issue. I was afraid of messing up other's repository. Anyway, I have to try in order to follow the curriculum. I forked and cloned one of my classmates' repository. It was my first time to test codes implemented by someone else. Reading... I went through the codes and tried to find any issue, were not easy at all. Anyway, the first issue I found is a very tiny thing: 'let' keyword although that never changed. It would be better to use 'const' keyword I think. Another issue is that the person did not use .gitignore . Although, I think it is not a big issue in here, It would be also better to node_modules in .gitignore to prevent accidently upload huge setting file to git. Lastly, It seems to have similar issues that I had already in my source code. It was about the wrong way like using async or promise functions as sync functions. The call of each urls tried to request a c...