[Core] Give friendly error when provided instance name doesn't exist. (#2969)

* Update data_manager.py

* Towncrier entry
This commit is contained in:
jack1142
2019-09-28 23:22:45 +02:00
committed by Michael H
parent 6bb1004bcd
commit 80628a28a7
2 changed files with 9 additions and 2 deletions

View File

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Give friendly error when provided instance name doesn't exist.