Logstash - grokfilter is successful using grokdebug, but fails in live

so the below would suggest I have created an index as per the Logstash config? is the index network-2017.12.08? I would put that in kibana?

alexw-mbp:itapp alexw$ curl -XGET 'localhost:9200/_cat/indices?v&pretty'
health status index                             uuid                   pri rep docs.count docs.deleted store.size pri.store.size
yellow open   .monitoring-logstash-6-2017.12.08 ZNgILIqwRDeEhAd77nFNZw   1   1        364            0    226.2kb        226.2kb
yellow open   .monitoring-es-6-2017.12.08       Uq02k6g9SW-mZGG0PnwC7w   1   1        364           36    281.5kb        281.5kb
yellow open   .kibana                           2ccgsW32Tf6ciKu2x4Oaig   1   1          1            0      3.6kb          3.6kb
yellow open   .monitoring-kibana-6-2017.12.08   sT92QnCjSuSm8bHQsF8qJA   1   1         38            0      145kb          145kb
yellow open   network-2017.12.08                O_J7DSD1TDGUYQpQwRFVIg   5   1         27            0    378.6kb        378.6kb