notice.js | Javascript notification library | Notification library

I am currently working on a new discord bot for my server and I've just started utilising .js files to store permanent data. I have set up a system to log attendees of a raid by typing "[Finished] etc... If the .js file where I am storing the data is empty everything works fine and all the data is correctly written to the file. However, if the bot restarts and then the .js file already contains data on other attendees and I attempt to write new data to that file it will throw me the "Unexpected Token" error.

I've attempted using fs.writeFileSync() but that doesn't seem to fix it, I've done a lot of research but can't seem to find a specific answer for my question.

Empty file to write to:

I am trying to setup my react app.

I am trying to understand how to integrate the routes with the app.

When I try to use AppRouter in my ReactDOM, I get an error message that says I shouldn't use Route outside the Router.

I don't understand what the error means. I can get rid of the error message when I remove the AppRouter line from my Provider, but that only creates a new error with the provider. I can't find an example of how to get started.

My app.js has:

I know my title has so many duplicates but i can't seem to find any the same problem as mine . Let me paste my code.