[Yandex Cloud documentation](../../../index.md) > [Yandex DataLens](../../index.md) > Troubleshooting > Internal server error

# [Yandex DataLens] Internal server error

`ERR.DS_API.DASHSQL.PARAMETER`

QL chart parameter handling error.

To fix the error, troubleshoot the issues listed in the error details.


If the error persists, contact Yandex Cloud [support](https://center.yandex.cloud/support). In your message, describe when the error occurs.