after calling liff.scanCodeV2(), "LIFF error: Failed to fetch" occurs

[fiddler0305]

After liff.scanCodeV2() is called, the error message "LIFF error: Failed to fetch" will be displayed when the App is opened again, and all LIFF Apps of the same user cannot be used until a period of time passes.

Already tested on Android 9, 11, 14 and all have the same problem

[odanado]

@fiddler0305 Thank you for a reporting!
In order to understand the problem more clearly, could you please film a video showing the steps leading up to the error and upload it to this issue?

[weeix]

I can reproduce this error.

Video.webm

Steps to reproduce:

1. Open LIFF Playground (demonstrates it's initially working).
2. Run the scanCodeV2 function.
3. Close the code scanner and the app.
4. Attempt to access LIFF Playground again. Result: LIFF error: Failed to fetch.

System info:

• OS: Android
• LIFF version: 2.25.1
• LINE version: 15.0.0

[odanado]

@weeix Thank you for sharing the video demonstrating the steps to reproduce the issue.

At the beginning of the video, you reopen LIFF Playground three times.
Does this step have anything to do with reproducing the issue?

[weeix]

@odanado The video's initial section is irrelevant to reproducing the issue. It only serves to demonstrate that the playground's failure occurs only after the liff.scanCodeV2() call.

[odanado]

@weeix Thank you.
Next, please tell me the following two points:

• The name of the device you are using
• The date and time the error occurred

[weeix]

@weeix Thank you. Next, please tell me the following two points:

• The name of the device you are using
• The date and time the error occurred

• Samsung Galaxy S21 FE
• 2025-02-18 12:08 +0700