XDCR Causing Problems in Couchbase Server

We are replicating data from Couchbase on to Elasticsearch. However, the Server hit a core(bug) while performing bulk updates. The core file size is approx 10.8G. The output obtained using the file command is as follows

core.7446: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/opt/couchbase/bin/goxdcr -localProxyPort=11215 -sourceKVAdminPort=8091 -xdcrRe'

We are using Couchbase Enterprise Edition 4.5.0