SyntaxError: Unexpected end of JSON input

Coding Help
1

Hi I was working on a discord bot project and then my bot wouldn’t refresh anymore, it kept saying this from the console

SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at /opt/watcher/source/app-picker.ts:105:37
    at ChildProcess.exithandler (child_process.js:285:7)
    at ChildProcess.emit (events.js:189:13)
    at ChildProcess.EventEmitter.emit (domain.js:441:20)
    at maybeClose (internal/child_process.js:970:16)
    at Socket.stream.socket.on (internal/child_process.js:389:11)
    at Socket.emit (events.js:189:13)
    at Socket.EventEmitter.emit (domain.js:441:20)
    at Pipe._handle.close (net.js:597:12)

I don’t know if someone can fix this
if you can thanks

2

I am not experienced enough to know for sure what you’re parsing, but if I’m not wrong you’re trying to parse “<anonymous>” as JSON? That’s not a JSON data.

Even if i’m wrong and anonymous is actually something else, you surely must be parsing a non-JSON data using JSON.parse()

Go to your project and check what is at /opt/watcher/source/app-picker.ts:105:37 for me.

Hope this helps!

I was wrong, that file is hidden from you. Can you show the code where you’re calling JSON.parse()?

3

I don’t actually know where to find app-picker.ts.

4

Somewhere in your project its trying to either parse something that is not a string or trying to parse an empty string.

5

I believe you’re parsing something that is not JSON. Most likely, it’s a variable that you expect to be JSON but isn’t. You have to debug yourself since we’re not able to see your code

6

Do you have any JSON files in your project? If so, are any empty? If they are empty, put 2 curly brackets in like so: {}

7

I’m getting this too…

I have an existing python glitch which worked great until I added a package.json to it. I was hoping to start using node for some client-side stuff. After adding my package.json, it enabled node on my glitch just fine, but every time it tries to restart, I get this in my log.

SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at /opt/watcher/source/app-picker.ts:107:39
    at ChildProcess.exithandler (child_process.js:285:7)
    at ChildProcess.emit (events.js:189:13)
    at ChildProcess.EventEmitter.emit (domain.js:441:20)
    at maybeClose (internal/child_process.js:970:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)

I disabled the watch.json by renaming it… so it’s not that…

and when I rename or delete the package.json, everything works again

I tried to replicate this using a new html only glitch then added a package.json to it… and that worked fine. I’m not sure what my python glitch is missing. https://glitch.com/edit/#!/ld-space-camp-0

8

I figured it out. Turns out if you want to run both Python and Node in the same container, you’ll have to remove or rename requirements.txt because when Glitch sees a requirements.txt in the root dir, it will try to run start.sh. This was very helpful: Python and Javascript in same project?

9

removing and replaying the code works for me. I don’t know if it works for someone else

10

ok so i am storing data in a file not in any database and it was working fine for 2,3 data elemenst but somehow i dunno when adn how my data got deleted from the file and then it keep showing me this data bcz i was displaying the empty json file so what i did that i deleted the file and when i run the code it got created again with data inside and it worked for me

11

Just Make sure that u are not displaying empty file if it is empty then delete that json file and re run the code and it will work