jitsi_app_c0/logging_config.js

// Logging configuration
var loggingConfig = { // eslint-disable-line no-unused-vars
    //default log level for the app and lib-jitsi-meet
    //defaultLogLevel: 'trace',
    // Option to disable LogCollector (which stores the logs on CallStats)
    //disableLogCollector: true,
    // Examples:
    //'modules/version/ComponentsVersions.js': 'info',
    //'modules/xmpp/ChatRoom.js': 'log'
};