Trello responds with "Invalid return_url" when trying to authorize token

[JoseChavez98]

Hi! I'm really sorry for opening an issue for this, but I'm having a really rough time with this.

I'm using client.js in a simple .html file. Can you help me to see why I'm getting this error? Also, I've been investigating and It's probably because of Allowed Origins, but I don't know what to put as my origin :(. I've tried with
http://localhost https://localhost http://localhost:222 https://localhost:2222 http://localhost:3000 https://localhost:3000

Your Environment

• Browser: Firefox
• Browser version: 76.0.1
• OS: Ubuntu 20.04
• App Version: index.html

[natterstefan]

Hi @JoseChavez98,

don't worry. I'm happy to help you - if I can. Have you seen my comment on the other issue: https://github.com/natterstefan/react-trello-multiboard/issues/23#issuecomment-573086608.

The following values are set on https://trello.com/app-key (in my setup):

• http://localhost
• http://localhost:2222

From the list you posted, I see there are two typos:

http://localhost:222 localhost:2222

• http://localhost:222 --> is missing another 2
• localhost:2222 --> is missing http://

Can you test if changing your values similar to mine resolves your issue, please?

[JoseChavez98]

Hi! This is awkward , but just because I was writing fast I made those mistakes.
Yes, I've tried with all the correct origins without success.
I have been investigating on which origin does firefox use and they say is the localhost:80 , but this also doesn't work. If you can help me , I will be really happy. Thank you

[natterstefan]

🤔 Let's see.

Can you tell me more about this, please?

I'm using client.js in a simple .html file. Can you help me to see why I'm getting this error?

So you are not using the app as-is, but only the created *.js file on another index.html page?

[natterstefan]

Hi @JoseChavez98, were you able to resolve this issue?