And the rest up to the error:
{"type":"response","@timestamp":"2018-12-17T08:13:18Z","tags":,"pid":7072,"method":"post","statusCode":200,"req":{"url":"/api/reporting/generate/printablePdf?jobParams=(browserTimezone%3AEurope%2FParis%2Clayout%3A(dimensions%3A(height%3A555.234375%2Cwidth%3A1129)%2Cid%3Apreserve_layout)%2CobjectType%3Avisualization%2CrelativeUrls%3A!('%2Fapp%2Fkibana%23%2Fvisualize%2Fedit%2Fc27f9c10-fe28-11e8-9e04-ed8c3381d671%3F_g%3D()%26_a%3D(filters%3A!!()%2Clinked%3A!!f%2Cquery%3A(language%3Alucene%2Cquery%3A!'!')%2CuiState%3A(vis%3A(defaultColors%3A(!'0%2B-%2B50!'%3A!'rgb(0%2C104%2C55)!'%2C!'50%2B-%2B75!'%3A!'rgb(255%2C255%2C190)!'%2C!'75%2B-%2B100!'%3A!'rgb(165%2C0%2C38)!')))%2Cvis%3A(aggs%3A!!((enabled%3A!!t%2Cid%3A!'1!'%2Cparams%3A()%2Cschema%3Ametric%2Ctype%3Acount))%2Cparams%3A(addLegend%3A!!t%2CaddTooltip%3A!!t%2Cgauge%3A(backStyle%3AFull%2CcolorSchema%3A!'Green%2Bto%2BRed!'%2CcolorsRange%3A!!((from%3A0%2Cto%3A50)%2C(from%3A50%2Cto%3A75)%2C(from%3A75%2Cto%3A100))%2CextendRange%3A!!t%2CgaugeColorMode%3ALabels%2CgaugeStyle%3AFull%2CgaugeType%3AArc%2CinvertColors%3A!!f%2Clabels%3A(color%3Ablack%2Cshow%3A!!t)%2Corientation%3Avertical%2CpercentageMode%3A!!f%2Cscale%3A(color%3A%2523333%2Clabels%3A!!f%2Cshow%3A!!t)%2Cstyle%3A(bgColor%3A!!f%2CbgFill%3A%2523eee%2CbgMask%3A!!f%2CbgWidth%3A0.9%2CfontSize%3A60%2ClabelColor%3A!!t%2Cmask%3A!!f%2CmaskBars%3A50%2CsubText%3A!'!'%2Cwidth%3A0.9)%2Ctype%3Ameter%2CverticalSplit%3A!!f)%2CisDisplayWarning%3A!!f%2Ctype%3Agauge)%2Ctitle%3A!'New%2BVisualization!'%2Ctype%3Agauge))')%2Ctitle%3A'New%20Visualization')","method":"post","headers":{"connection":"upgrade","host":"int.flightwatching.com","content-length":"0","origin":"https://int.flightwatching.com","kbn-version":"6.5.1","user-agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36","content-type":"application/json","accept":"/","referer":"https://int.flightwatching.com/app/kibana","accept-encoding":"gzip, deflate, br","accept-language":"en-US,en;q=0.9,fr;q=0.8"},"remoteAddress":"127.0.0.1","userAgent":"127.0.0.1","referer":"https://int.flightwatching.com/app/kibana"},"res":{"statusCode":200,"responseTime":349,"contentLength":9},"message":"POST /api/reporting/generate/printablePdf?jobParams=(browserTimezone%3AEurope%2FParis%2Clayout%3A(dimensions%3A(height%3A555.234375%2Cwidth%3A1129)%2Cid%3Apreserve_layout)%2CobjectType%3Avisualization%2CrelativeUrls%3A!('%2Fapp%2Fkibana%23%2Fvisualize%2Fedit%2Fc27f9c10-fe28-11e8-9e04-ed8c3381d671%3F_g%3D()%26_a%3D(filters%3A!!()%2Clinked%3A!!f%2Cquery%3A(language%3Alucene%2Cquery%3A!'!')%2CuiState%3A(vis%3A(defaultColors%3A(!'0%2B-%2B50!'%3A!'rgb(0%2C104%2C55)!'%2C!'50%2B-%2B75!'%3A!'rgb(255%2C255%2C190)!'%2C!'75%2B-%2B100!'%3A!'rgb(165%2C0%2C38)!')))%2Cvis%3A(aggs%3A!!((enabled%3A!!t%2Cid%3A!'1!'%2Cparams%3A()%2Cschema%3Ametric%2Ctype%3Acount))%2Cparams%3A(addLegend%3A!!t%2CaddTooltip%3A!!t%2Cgauge%3A(backStyle%3AFull%2CcolorSchema%3A!'Green%2Bto%2BRed!'%2CcolorsRange%3A!!((from%3A0%2Cto%3A50)%2C(from%3A50%2Cto%3A75)%2C(from%3A75%2Cto%3A100))%2CextendRange%3A!!t%2CgaugeColorMode%3ALabels%2CgaugeStyle%3AFull%2CgaugeType%3AArc%2CinvertColors%3A!!f%2Clabels%3A(color%3Ablack%2Cshow%3A!!t)%2Corientation%3Avertical%2CpercentageMode%3A!!f%2Cscale%3A(color%3A%2523333%2Clabels%3A!!f%2Cshow%3A!!t)%2Cstyle%3A(bgColor%3A!!f%2CbgFill%3A%2523eee%2CbgMask%3A!!f%2CbgWidth%3A0.9%2CfontSize%3A60%2ClabelColor%3A!!t%2Cmask%3A!!f%2CmaskBars%3A50%2CsubText%3A!'!'%2Cwidth%3A0.9)%2Ctype%3Ameter%2CverticalSplit%3A!!f)%2CisDisplayWarning%3A!!f%2Ctype%3Agauge)%2Ctitle%3A!'New%2BVisualization!'%2Ctype%3Agauge))')%2Ctitle%3A'New%20Visualization') 200 349ms - 9.0B"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["reporting","esqueue","worker","debug"],"pid":7072,"message":"jps1iru105ggf4f1af688tyb - 1 outstanding jobs returned"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["license","debug","xpack"],"pid":7072,"message":"Calling [data] Elasticsearch _xpack API. Polling frequency: 30001"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["reporting","esqueue","worker","debug"],"pid":7072,"message":"jps1iru105ggf4f1af688tyb - Claimed job jps1l7oh05ggf4f1af3pnefc"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["debug","legacy","proxy"],"pid":7072,"message":"Event is being forwarded: connection"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["reporting","esqueue","worker","debug"],"pid":7072,"message":"jps1iru105ggf4f1af688tyb - Starting job jps1l7oh05ggf4f1af3pnefc"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["reporting","worker","debug"],"pid":7072,"message":"PDF: Processing PDF job"}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["trace","legacy","service"],"pid":7072,"message":"Request will be handled by proxy GET:/api/reporting/jobs/list?page=0&ids=jps1l7oh05ggf4f1af3pnefc."}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["debug","security","basic"],"pid":7072,"message":"Trying to authenticate user request to /api/reporting/jobs/list?page=0&ids=jps1l7oh05ggf4f1af3pnefc."}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["debug","security","basic"],"pid":7072,"message":"Trying to authenticate via header."}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["debug","security","basic"],"pid":7072,"message":"Authorization header is not presented."}
{"type":"log","@timestamp":"2018-12-17T08:13:19Z","tags":["debug","security","basic"],"pid":7072,"message":"Trying to authenticate via state."}
{"type":"log","@timestamp":"2018-12-17T08:13:20Z","tags":["debug","security","basic"],"pid":7072,"message":"Request has been authenticated via state."}
{"type":"log","@timestamp":"2018-12-17T08:13:20Z","tags":["reporting","screenshots","debug"],"pid":7072,"message":"Creating browser driver factory"}
{"type":"log","@timestamp":"2018-12-17T08:13:20Z","tags":["reporting","esqueue","worker","warn"],"pid":7072,"message":"jps1iru105ggf4f1af688tyb - Failure occurred on job jps1l7oh05ggf4f1af3pnefc: Error: Caught error spawning Chromium\n at Observable.Rx.Observable.create [as _subscribe] (/usr/share/kibana/node_modules/x-pack/plugins/reporting/server/browsers/chromium/driver_factory/index.js:56:24)\n at \n at process._tickDomainCallback (internal/process/next_tick.js:228:7)"}