---
title: Troubleshoot notebooks
description: Common issues with the notebooks feature.
url: https://docs.influxdata.com/influxdb/v2/tools/notebooks/troubleshoot-notebooks/
estimated_tokens: 339
product: InfluxDB OSS v2
version: v2
---

# Troubleshoot notebooks

This page documents an earlier version of InfluxDB OSS. [InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a copy of the database file doesn’t expose usable tokens. Existing tokens are hashed on first startup and the original strings can’t be recovered afterward — **capture any plaintext tokens you still need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

### No measurements appear in my bucket even though there’s data in it.

Try changing the time range. You might have measurements prior to the time range you selected. For example, if the selected time range is `Past 1h` and the last write happened 16 hours ago, you’d need to change the time range to `Past 24h` (or more) to see your data.

[notebooks](/influxdb/v2/tags/notebooks/)