> For the complete documentation index, see [llms.txt](https://cqube.sunbird.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cqube.sunbird.org/cqube-v-4.1-beta/troubleshooting-issues/data-emission-issues.md).
# Data Emission Issues
| | **Where** | | **Why** | **How to resolve** | | | | |
| -------------------------------------------------------------------------------------- | --------------------- | ---------------------------------------------------- | ------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------- | ----------------------------------- | ------------------------------------------------------------------------ | ----------------------------------------------- |
| **Error message** | **Error Location** | **Error type** | **Error identification (Cause)** | **Probable resolution** | | | | |
| Error: 400, f'Bad request, filename not provided in payload' | console emission logs | When the key/filename is not provided in the request | When the key/filename is not provided in the request | Provide the valid key/filename in the request body | | | | |
| Error: 404, f'Bad request, unable to find the file - validate the filename in payload' | console emission logs | When the key/filename specified doesn't exist | When the key/filename is provided in the request, doesn't exist in cQube bucket | Provide the valid key/filename in the request body while uploading or dowloading | | | | |
| Error: 400, f'Bad request, not cqube bucket - validate the bucket name' | console emission logs | When the bucket name specified doesn't exist | When the bucket name provided in the request, doesn't exist | Provide the valid bucket name in the request body while uploading or dowloading
| Error: 400, f'Bad request, validate the payload' console emission logs | When the payload has missing fields | When any of the fields are missing in the payload, this issue will occur | Request with the required fields in the request |
| Error: No credentials found for given 'iss' | console emission logs | When the token is not issued by cQube | When the token is not issued by cQube | The valid token issued by admin needs to be used | | | | |
| Error: "Bad token; invalid JSON" | console emission logs | When the token is not valid | When the token is not issued by cQube and is invalid | The valid token issued by admin needs to be used | | | | |
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