KIBANA: faild to parse date

[dharam.mahi (dharmendra kumar singh)]

Hi All,
I am facing problem with kibana version 5.5.0 , my input is date for "20170405" so i am ingesting the data using logtash and mapping is

PUT cp2
{
"mappings": {
"cp": {
"properties": {
"Date": {
"type": "date",
"format": "yyyyMMdd",
"index": true

    },
    
    "EmpID": {
      "type": "keyword",
      "index": true

    },
    "EmailID": {
      "type": "keyword",
      "index": true

    },
    "FirstName": {
      "type": "keyword",
      "index": true

    },
    "LastName": {
      "type": "keyword",
      "index": true
      
    },
    "Designation": {
      "type": "keyword",
      "index": true
    },
    "ReportingTo": {
      "type": "keyword",
      "index": true
    },
    "FunctionalManager": {
      "type": "keyword",
      "index": true
    },
    "Project": {
      "type": "keyword",
      "index": true
    },
    "Consultant": {
      "type": "keyword",
      "index": true
    },
    "GM1": {
      "type": "double",
      "index": true
    },
    "GM2": {
      "type": "double",
      "index": true
    },
    "GM3": {
      "type": "double",
      "index": false
    }
  }
}

}
}
when i make chat on date and filter date then kibana throw the error faild to pares date

[thomasneirynck]

hi @dharam.mahi

what happens in Discover, does the date-field look OK there?