Migrating procedure - From TTS_SANDBOX To TTS_Cloud (Migrate Without Persisting Active Session)

I am learning the Migrating procedure. Specifically from TTS_SANDBOX to TTS_Cloud (Migrate Without Persisting Active Session). I follow the procedure described in the documentation, I got to the step to export the device data file but I encountered the following error:
Error: error:go.thethings.network/lorawan-stack-migrate/pkg/export:export (export device 75-skysens-skycld1-xxx)
error:go.thethings.network/lorawan-stack-migrate/pkg/export:export (export device 75-skysens-skycld1-xxx)
device_id=75-skysens-skycld1-xxx
correlation_id=5ce1b9e46f6a47378a2a50d8f9657xxx
— error:pkg/auth/rights:insufficient_application_rights (insufficient rights for application 75-skysens-xxx@ttn)
missing=[RIGHT_APPLICATION_DEVICES_READ]
uid=75-skysens-xxx@ttn
correlation_id=66789a805dbe45b8926506655f009xxx

Any hint where to look for the problem?
Best regards, Tomo

The error message pretty much spells out the problem of no read rights on the application.

Please format JSON / serial / logs etc with the </> tool - that way it syntax highlights which makes it more readable which may highlight the issue.

Dear Nick.
Thanks for the help.
I found errors.
Now is OK. :wink: