Help with GravitLauncher

Hello, everyone! I need help with setup GravitLauncher (launcher for modded server) with Playit.gg, can anyone help me with this? It just don’t
{ "projectName": "AstrxNova", "mirrors": [ "https://mirror.gravit.pro/5.2.x/", "https://gravit-launcher-mirror.storage.googleapis.com/" ], "binaryName": "Launcher", "copyBinaries": true, "cacheUpdates": true, "env": "STD", "auth": { "std": { "isDefault": true, "core": { "type": "reject" }, "textureProvider": { "skinURL": "http://example.com/skins/%username%.png", "cloakURL": "http://example.com/cloaks/%username%.png", "type": "request" }, "displayName": "Default" } }, "protectHandler": { "profileWhitelist": {}, "allowUpdates": [], "type": "std" }, "components": { "regLimiter": { "message": "Превышен лимит регистраций", "excludeIps": [], "exclude": [], "rateLimit": 3, "rateLimitMillis": 36000000, "type": "regLimiter" }, "authLimiter": { "message": "Превышен лимит авторизаций", "exclude": [], "rateLimit": 3, "rateLimitMillis": 8000, "type": "authLimiter" }, "proguard": { "modeAfter": "MainBuild", "dir": "proguard", "enabled": true, "mappings": true, "type": "proguard" } }, "launch4j": { "enabled": true, "setMaxVersion": false, "maxVersion": "1.8.999", "minVersion": "1.8.0", "downloadUrl": "http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html", "productName": "GravitLauncher", "productVer": "5.2.9.9", "fileDesc": "GravitLauncher 5.2.9", "fileVer": "5.2.9.9", "internalName": "Launcher", "copyright": "© GravitLauncher Team", "trademarks": "This product is licensed under GPLv3", "txtFileVersion": "%s, build %d", "txtProductVersion": "%s, build %d" }, "netty": { "fileServerEnabled": true, "sendExceptionEnabled": false, "ipForwarding": true, "disableWebApiInterface": false, "showHiddenFiles": false, "launcherURL": "http://223.ip.ply.gg:11187/Launcher.jar", "downloadURL": "http://223.ip.ply.gg:11187/%dirname%/", "launcherEXEURL": "http://223.ip.ply.gg:11187/Launcher.exe", "address": "ws://223.ip.ply.gg:9274/api", "bindings": {}, "performance": { "usingEpoll": false, "bossThread": 2, "workerThread": 8, "schedulerThread": 2, "sessionLifetimeMs": 86400000, "maxWebSocketRequestBytes": 1048576 }, "binds": [ { "address": "223.ip.ply.gg", "port": 11187 } ], "logLevel": "DEBUG" }, "launcher": { "guardType": "no", "compress": true, "stripLineNumbers": true, "deleteTempFiles": true, "certificatePinning": false, "encryptRuntime": false, "customJvmOptions": [], "memoryLimit": 256 }, "sign": { "enabled": false, "keyStore": "pathToKey", "keyStoreType": "JKS", "keyStorePass": "mypass", "keyAlias": "myname", "keyPass": "mypass", "metaInfKeyName": "SIGNUMO.RSA", "metaInfSfName": "SIGNUMO.SF", "signAlgo": "SHA256WITHRSA" }, "startScript": ".\\start.bat" }