The workshop is using system NVS partition to store data.
The recommended approach is to create a new NVS partition to store custom data and leave the system one for Wi-Fi and other subsystems.
Having separate partition have several benefits:
- isolation from system data
- better wear leveling
- reduced of risk of running out of storage if system writes something into the partition
Suggestion: Explicitly mention an approach to create new nvs partition, so that it's not shared with system.