Before you continue
Before submitting a bug report, please review our troubleshooting documentation at https://developer.amazon.com/docs/kepler-tv/troubleshoot-overview.html.
If you still want to file a bug report, please make sure to fill in all the details below and provide the necessary information.
NOTE: PLEASE ONLY REPORT A SINGLE BUG USING THIS TEMPLATE.
If you’re experiencing multiple issues, please file a separate report for each.
Bug Description
1. Summary
Provide a brief description of the bug in the SDK and its impact on app functionality.
When using the RecommendationManager to add some recommendations, and the object doesn’t have the title
or the text
or the contentUri
(fields that are not required) the addRecommendations and addRecommendations2 methods throw an error: InvalidArgumentError
https://developer.amazon.com/docs/kepler-tv-api/amazon-media-recommendations-overview.html
App Name:
App Link on Amazon Appstore (found through Developer Console → Actions column in App List → View on Amazon.com): ITVX - App on Amazon Appstore
Bug Severity
Select one that applies
- Impacts operation of app
- Blocks current development
- Improvement suggestion
- Issue with documentation (If selected, please share the doc link and describe the issue)
- Other
2. Steps to Reproduce
Create a Recommendations object without title or text or contentUri and pass it to the RecommendationsManager2.addRecommendations method
3. Observed Behavior
Explain what actually happened, noting any discrepancies or malfunctions.
<!-- Answer here -->
Sep 10 13:07:11.799251 firestick-03553f51479a3613 local0.err ITVMobilePlayer[6050]: 1719870452 ERROR com.amazon.keplerscript: [KeplerScript-JavaScript] InvalidArgumentError: Invalid args:cannot add recommendations2, js engine: hermes
4. Expected Behavior
Describe what you expected the SDK to do under normal operation.
<!-- Answer here -->
The error is not thrown
4.a Possible Root Cause & Temporary Workaround
Fill out anything you have tried. If you don’t know, N/A is acceptable
<!-- Answer here -->
I've added always data for those fields
5. Logs or crash report
(Please make sure to provide relevant logs as attachment and share VPKG file with your Amazon contact)
For crash issues, please refer this guide for faster troubleshooting: https://developer.amazon.com/docs/kepler-tv/detect-crash.html.
-
For issues with Kepler Studio Extension, please share log files from below folders:
Sep 10 13:07:11.799251 firestick-03553f51479a3613 local0.err *****[6050]: 1719870452 ERROR com.amazon.keplerscript: [KeplerScript-JavaScript] InvalidArgumentError: Invalid args:cannot add recommendations2, js engine: hermes
6. Environment
Please fill out the fields related to your bug below:
-
SDK Version: 0.20.3443
-
App State:
Is a task
-
OS Information
Please ssh into the device viakepler exec vda shell
and copy the output fromcat /etc/os-release
into the answer section below. Note, if you don’t have a simulator running or device attachedkepler exec vda shell
will respond withvda: no devices/emulators found
NAME="OS" OE_VERSION="4.0.0" OS_MAJOR_VERSION="1" OS_MINOR_VERSION="1" RELEASE_ID="2" OS_VERSION="1.1" BRANCH_CODE="VegaMainlineTvIntegration" BUILD_DESC="OS 1.1 (VegaMainlineTvIntegration/4418)" BUILD_FINGERPRINT="4.0.155683.0(3072cab629675a74)/4418N:user-external/release-keys" BUILD_VARIANT="user-external" BUILD_TAGS="release-keys" BUILD_DATE="Wed Sep 03 05:40:19 UTC 2025" BUILD_TIMESTAMP="1756878019" VERSION_NUMBER="201010441850"
7. Example Code Snippet / Screenshots / Screengrabs
Include any relevant code or component setup in React Native that can help reproduce the bug.
import { RecommendationManager2 } from '@amzn/recommendation-manager';
const recommendation = {
title: 'Recommended film',
text: 'Check out this great film!',
contentImageUri: contentImage,
backgroundImageUri: backgroundImage,
category: Category.HOME,
displayName: 'ITVX',
displayActionOption: DisplayAction.VIEW_WITH_APP_DISPLAY_NAME,
maturityRating: 'BBFCPG',
customerAggregateRating: Math.floor(Math.random() * 10) + 1,
customerRatingCount: Math.floor(Math.random() * 1000) + 1,
runningTime: 90 + Math.floor(Math.random() * 60),
releaseYear: Math.floor(Math.random() * (2024 - 1980 + 1)) + 1980,
isCaptionAvailable: true
};
RecommendationManager2.addRecommendations2([recommendation]);
Playback Issues
If this is a playback issue, please provide your VPKG and/or content URL, any pre-conditions (like geo-location) [Share privately with your Amazon contact] , and let us know if it’s x86 or arm7.
<!-- Describe your playback issue if applicable -->
Please share the following details in addition:_
- Player SDK:
[Bitmovin, Shaka, ...]
- Player SDK Version:
[e.g. 1.23]
- Audio Codecs:
[AAC, ...]
- Video Codecs:
[h.264, mp4]
- Manifest Types:
[m3u8, dash, etc ..]
- Audio Codecs:
Q: Would you like to be contacted to share your latest VPKG compiled with latest SDK:
[Y/N] [Share privately with your Amazon contact]
Q: VPN or Login needed to verify functionality in VPKG?
[Y/N] [Share privately with your Amazon contact]
Q: If applicable, please provide your media/content url
If this is created dynamically, tokenized, etc please provide a way for us to access it
[N/A or Content / Media Url for testing] [Share privately with your Amazon contact]
Q: Are there any special headers required to reproduce the issue you are facing?
[N/A or Insert Headers]
Additionally please provide the following if possible
Provide Screenshots / Screengrabs / Logs. Please include as much information as you can that will help debug.
<!-- Answer here if applicable -->
Additional Context
Any Additional Context you would like to provide?
Add any other relevant information, such as recent updates to the SDK, dependencies, or device OS that may affect the bug.
<!-- Answer here if applicable -->