Werk #14108: Fix KeyError if event console views are linked in dashboards

Component	User interface
Title	Fix KeyError if event console views are linked in dashboards
Date	May 12, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 2.0.0p25 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

If you linked event console views like "Events" (ec_events) in dashboards with the option "Add" -> "Link to existing view", the error "KeyError: 'datasource'" occurred.

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