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GWC Seed Form returns "Chunk [] is not a valid entry" message error when seeding a layer.

Description

GWC Seed Form returns à page with "Chunk [] is not a valid entry" message error when seeding a layer.

Extract from the log error file :
2017-12-07 07:02:57,561 ERROR [geoserver.rest] - Chunk [] is not a valid entry
java.lang.IllegalArgumentException: Chunk [] is not a valid entry

Environment

GeoServer 2.12.1 on windows server 2008 R2 and JRE 1.8.0_102 (Java HotSpot(TM) 64-Bit Server VM)

Status

Assignee

Unassigned

Reporter

fournel

Triage

None

Fix versions

Affects versions

2.12.1

Components

Priority

Medium