carbon-cache got invalid line received from client error

[nkrobot]

hi, I start graphite use example conf,with follow storage-aggregation.conf:
[scrapy_min]
pattern = ^scrapy..*_min$
xFilesFactor = 0.1
aggregationMethod = min

            [scrapy_max]
            pattern = ^scrapy\..*_max$
            xFilesFactor = 0.1
            aggregationMethod = max

            [scrapy_sum]
            pattern = ^scrapy\..*_count$
            xFilesFactor = 0.1
            aggregationMethod = sum
        4.in settings set:
            STATS_CLASS = 'scrapygraphite.GraphiteStatsCollector'
            GRAPHITE_HOST = '127.0.0.1'
            GRAPHITE_PORT = 2003

I got invalid line received from client error, can any one help?