[7.x] [ML] Anomaly Detection: Fix validation error when no data in index. (#86114)#86348

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walterra merged 1 commit intoelastic:7.xfrom walterra:backport/7.x/pr-86114

Dec 18, 2020

+207-84

Commits on Dec 17, 2020

[ML] Anomaly Detection: Fix validation error when no data in index. (elastic#86114 )
walterra
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