Monthly Archives: January 2019

Fixing Elasticsearch error: No handler for type [string] declared on field

By | January 4, 2019

This Elasticsearch error: No handler for type [string] declared on field is often seen after an “innocent” upgrade from Elasticsearch 5.x to 6.x. Classic sign is that the new indices do not get created. I faced this error when using Serilog to push data into the Elasticsearch cluster after upgrade. It is frustrating as it… Read More »