main ERROR Unable to locate appender "test" for logger config "test"

Try to define your appenders using type attribute like below -

{    "type": "File",    "PatternLayout": {        "pattern": "%msg%n"    },    "name": "test",    "fileName": "c:/logs/requests_received.log"},{    "type": "File",    "PatternLayout": {        "pattern": "%msg%n"    },    "name": "test1",    "fileName": "c:/logs/response_sent.log"}

For this, You have to modify all appender configuration using type attribute. Your complete configuration file will change like below -

{    "Configuration": {        "Appenders": {            "appender": [                {                    "type": "Console",                    "PatternLayout": {                        "pattern": "%d{yyyy-MMM-dd HH:mm:ss a} [%t] %-5level %logger{36} - %msg%n"                    },                    "name": "Console",                    "target": "SYSTEM_OUT"                },                {                    "type": "RollingFile",                    "name": "general",                    "fileName": "C:/logs/simulator-log.log",                    "filePattern": "C:/logs/simulator-log-%d{yyyy-MM-dd HH-mm-ss}.log",                    "PatternLayout": {                        "pattern": "%msg%n"                    },                    "Policies": {                        "OnStartupTriggeringPolicy": {                        }                    }                },                {                    "type": "File",                    "PatternLayout": {                        "pattern": "%msg%n"                    },                    "name": "test",                    "fileName": "c:/logs/requests_received.log"                },                {                    "type": "File",                    "PatternLayout": {                        "pattern": "%msg%n"                    },                    "name": "test1",                    "fileName": "c:/logs/response_sent.log"                }            ]        },        "Loggers": {            "Root": {                "AppenderRef": [                    {                        "ref": "Console"                    }                ],                "level": "trace"            },            "logger": [                {                    "name": "test",                    "level": "trace",                    "additivity": "false",                    "AppenderRef": {                        "ref": "test"                    }                },                {                    "name": "test1",                    "level": "trace",                    "additivity": "false",                    "AppenderRef": {                        "ref": "test1"                    }                },                {                    "name": "general",                    "level": "trace",                    "additivity": "false",                    "AppenderRef": {                        "ref": "general"                    }                }            ]        }    }}