Unable to parse date in logstash getting _grokparsefailure in elasticsearch

I am using beats to read logs from my log file and log format is like:

I tried many patterns but nothing works. Logstash is starting successfully but in kibana i am getting _grokparsefailure

My filter in logstash is:
filter {
grok {
match => [ "message", "%{TIMESTAMP_ISO8601:logtime} %{GREEDYDATA:message}" ]
date {
match => ["logtime", "yyyy-MM-dd'T'HH:mm:ss'.'SSSSSSS'Z'"]
timezone => "UTC"
target => "@timestamp"

It looks like your grok pattern has a space after the timestamp but the log format does not.

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