APM dashboard shows no data
I can see in the APM index, data is getting loaded.
Kibana logs
{"type":"log","@timestamp":"2022-12-20T19:23:25+00:00","tags":["error","plugins","apm"],"pid":2513,"message":"Error: Not Found\n at handler (/usr/share/kibana/x-pack/plugins/apm/server/routes/settings/agent_configuration.js:299:27)\n at runMicrotasks (<anonymous>)\n at processTicksAndRejections (internal/process/task_queues.js:95:5)\n at /usr/share/kibana/x-pack/plugins/apm/server/routes/register_routes/index.js:139:22\n at Router.handle (/usr/share/kibana/src/core/server/http/router/router.js:163:30)\n at handler (/usr/share/kibana/src/core/server/http/router/router.js:124:50)\n at exports.Manager.execute (/usr/share/kibana/node_modules/@hapi/hapi/lib/toolkit.js:60:28)\n at Object.internals.handler (/usr/share/kibana/node_modules/@hapi/hapi/lib/handler.js:46:20)\n at exports.execute (/usr/share/kibana/node_modules/@hapi/hapi/lib/handler.js:31:20)\n at Request._lifecycle (/usr/share/kibana/node_modules/@hapi/hapi/lib/request.js:370:32)\n at Request._execute (/usr/share/kibana/node_modules/@hapi/hapi/lib/request.js:279:9) {\n data: null,\n isBoom: true,\n isServer: false,\n output: {\n statusCode: 404,\n payload: { statusCode: 404, error: 'Not Found', message: 'Not Found' },\n headers: {}\n }\n}"}
apm-server logs
{"log.level":"error","@timestamp":"2022-12-20T20:09:00.726Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":60},"message":"data validation error","service.name":"apm-server","event.dataset":"apm-server","url.original":"/intake/v2/events","http.request.method":"POST","user_agent.original":"elasticapm-java/1.24.0","source.address":"xx.xx.xx.xx","http.request.id":"a2229383-5df0-44c3-80da-9753d10e9a5f","event.duration":4168122814,"http.response.status_code":400,"error.message":"decode error: data read error: v2.errorRoot.Error: v2.errorEvent.Exception: v2.errorException.Cause: []v2.errorException: v2.errorException.Message: ReadString: expects \" or n,","ecs.version":"1.6.0"}