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UnknownException with underlyingException: "FormatException: Unexpected character (at character 1)\n<html>\n^\n" #6614

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UnknownException with underlyingException: "FormatException: Unexpected character (at character 1)\n<html>\n^\n"#6614
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bugSomething is not working; the issue has reproducible steps and has been reproducednot-reproducibleIssues that cannot be reproduced using the steps providedpending-community-responsePending response from the issue opener or other community members

Description

@asaarnak
asaarnak
opened on Feb 12, 2026

Description

Only one Android 16 user has got this exception:
We have no more logs from crashlytics, hopefully this helps.

  sdk: 3.10.7
  flutter: 3.38.7
  amplify_flutter: ^2.9.0
  amplify_auth_cognito: ^2.9.0

UnknownException with underlyingException: "FormatException: Unexpected character (at character 1)\n<html>\n^\n"

Categories

  • Analytics
  • API (REST)
  • API (GraphQL)
  • Auth
  • Authenticator
  • DataStore
  • Notifications (Push)
  • Storage

Steps to Reproduce

Don't know.

Screenshots

No response

Platforms

  • iOS
  • Android
  • Web
  • macOS
  • Windows
  • Linux

Flutter Version

3.38.7

Amplify Flutter Version

2.9.0

Deployment Method

Amplify Gen 2

Schema

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