Error logs from Kibana

Errorlogs_from_kibana

{"type":"response","@timestamp":"2019-11-18T16:45:35Z","tags":[],"pid":1,"method":"get","statusCode":301,"req":{"url":"/socket.io/?EIO=3&transport=polling&t=MtjhZoM","method":"get","headers":{"host":"<hostname>","connection":"keep-alive","accept-encoding":"gzip, deflate","accept":"*/*","user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0","kbn-xsrf":"professionally-crafted-string-of-text","content-type":"application/json;charset=utf-8","kbn-version":"6.4.3"},"remoteAddress":"185.161.70.34","userAgent":"185.161.70.34"},"res":{"statusCode":301,"responseTime":10,"contentLength":9},"message":"GET /socket.io/?EIO=3&transport=polling&t=MtjhZoM 301 10ms - 9.0B"},
{"type":"response","@timestamp":"2019-11-18T16:45:36Z","tags":[],"pid":1,"method":"get","statusCode":404,"req":{"url":"/socket.io?EIO=3&transport=polling&t=MtjhZoM","method":"get","headers":{"host":"<hostname>","connection":"keep-alive","accept-encoding":"gzip, deflate","accept":"*/*","user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0","kbn-xsrf":"professionally-crafted-string-of-text","kbn-version":"6.4.3"},"remoteAddress":"185.161.70.34","userAgent":"185.161.70.34"},"res":{"statusCode":404,"responseTime":219,"contentLength":9},"message":"GET /socket.io?EIO=3&transport=polling&t=MtjhZoM 404 219ms - 9.0B"},
{"type":"error","@timestamp":"2019-11-18T16:46:59Z","tags":["warning","process"],"pid":1,"level":"error","error":{"message":"Error: Specified object should be an Object or Array\n    at validateObject (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:39:11)\n    at convertKeysToSnakeCaseDeep (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:44:3)\n    at handler (/usr/share/kibana/node_modules/x-pack/plugins/xpack_main/server/routes/api/v1/xpack_info.js:22:13)\n    at Object.internals.handler (/usr/share/kibana/node_modules/hapi/lib/handler.js:96:36)\n    at request._protect.run (/usr/share/kibana/node_modules/hapi/lib/handler.js:30:23)\n    at module.exports.internals.Protect.internals.Protect.run (/usr/share/kibana/node_modules/hapi/lib/protect.js:64:5)\n    at exports.execute (/usr/share/kibana/node_modules/hapi/lib/handler.js:24:22)\n    at each (/usr/share/kibana/node_modules/hapi/lib/request.js:384:16)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Hoek.once (/usr/share/kibana/node_modules/hapi/lib/protect.js:52:16)\n    at wrapped (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:31:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at method (/usr/share/kibana/node_modules/x-pack/plugins/dashboard_mode/server/dashboard_mode_request_interceptor.js:44:7)\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/xsrf.js:33:26\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/version_check.js:24:26","name":"UnhandledPromiseRejectionWarning","stack":"UnhandledPromiseRejectionWarning: Error: Specified object should be an Object or Array\n    at validateObject (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:39:11)\n    at convertKeysToSnakeCaseDeep (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:44:3)\n    at handler (/usr/share/kibana/node_modules/x-pack/plugins/xpack_main/server/routes/api/v1/xpack_info.js:22:13)\n    at Object.internals.handler (/usr/share/kibana/node_modules/hapi/lib/handler.js:96:36)\n    at request._protect.run (/usr/share/kibana/node_modules/hapi/lib/handler.js:30:23)\n    at module.exports.internals.Protect.internals.Protect.run (/usr/share/kibana/node_modules/hapi/lib/protect.js:64:5)\n    at exports.execute (/usr/share/kibana/node_modules/hapi/lib/handler.js:24:22)\n    at each (/usr/share/kibana/node_modules/hapi/lib/request.js:384:16)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Hoek.once (/usr/share/kibana/node_modules/hapi/lib/protect.js:52:16)\n    at wrapped (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:31:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at method (/usr/share/kibana/node_modules/x-pack/plugins/dashboard_mode/server/dashboard_mode_request_interceptor.js:44:7)\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/xsrf.js:33:26\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/version_check.js:24:26\n    at emitWarning (internal/process/promises.js:65:17)\n    at emitPendingUnhandledRejections (internal/process/promises.js:109:11)\n    at process._tickDomainCallback (internal/process/next_tick.js:229:7)"},"message":"Error: Specified object should be an Object or Array\n    at validateObject (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:39:11)\n    at convertKeysToSnakeCaseDeep (/usr/share/kibana/node_modules/x-pack/server/lib/key_case_converter.js:44:3)\n    at handler (/usr/share/kibana/node_modules/x-pack/plugins/xpack_main/server/routes/api/v1/xpack_info.js:22:13)\n    at Object.internals.handler (/usr/share/kibana/node_modules/hapi/lib/handler.js:96:36)\n    at request._protect.run (/usr/share/kibana/node_modules/hapi/lib/handler.js:30:23)\n    at module.exports.internals.Protect.internals.Protect.run (/usr/share/kibana/node_modules/hapi/lib/protect.js:64:5)\n    at exports.execute (/usr/share/kibana/node_modules/hapi/lib/handler.js:24:22)\n    at each (/usr/share/kibana/node_modules/hapi/lib/request.js:384:16)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Hoek.once (/usr/share/kibana/node_modules/hapi/lib/protect.js:52:16)\n    at wrapped (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:31:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at method (/usr/share/kibana/node_modules/x-pack/plugins/dashboard_mode/server/dashboard_mode_request_interceptor.js:44:7)\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/xsrf.js:33:26\n    at Items.serial (/usr/share/kibana/node_modules/hapi/lib/request.js:403:22)\n    at iterate (/usr/share/kibana/node_modules/items/lib/index.js:36:13)\n    at done (/usr/share/kibana/node_modules/items/lib/index.js:28:25)\n    at Function.wrapped [as _next] (/usr/share/kibana/node_modules/hoek/lib/index.js:879:20)\n    at Function.internals.continue (/usr/share/kibana/node_modules/hapi/lib/reply.js:108:10)\n    at /usr/share/kibana/src/server/http/version_check.js:24:26"},