> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/data-api-sdk/mobile-sdk-setup-permissions-and-crashes/stale-sdk-version-broke-compat.md).

# Why did my Python SDK data pulls stop working?

If data pulls suddenly stop on an older Terra client SDK version, the cause is usually **an API change that broke compatibility with the outdated SDK**, not downtime.

Two ways to fix it:

* **Upgrade to the latest version**, e.g. `pip install --upgrade terra-python`.
* As a quick fix, **call the REST API directly** with your `dev-id` and `x-api-key` headers.