I'm a beginner on ELK, Logstash and Kibana so sorry in advance if i make mistakes in my explanation !
So, to explain, I configure Logstash to read my kannel logs and send some datas from them to my ELK, to finally centralize and analyze them on Kibana.
To understand better, there is the pattern of my datas :
The problem is that I want to do a line chart with a date histogram with the sent_date field to see the count of my instances hourly, but when I did it, no point and no line is visible on the chart. However, the data table tells me there are some values as you can see below :
So I'm asking for help to you ! I don't understand why this doesn't work.
PS : Sorry for my english, I'm french