Kibana.yml configure error

[Tingda_Du]

in kibana.yml I have that

logging.root.level: error

But I got the error of

Configuring logger failed: { ValidationError: child "logging" fails because ["root" is not allowed]
    at Object.exports.process (/usr/share/kibana/node_modules/joi/lib/errors.js:196:19)
    at internals.Object._validateWithOptions (/usr/share/kibana/node_modules/joi/lib/types/any/index.js:675:31)
    at module.exports.internals.Any.root.validate (/usr/share/kibana/node_modules/joi/lib/index.js:146:23)
    at Config._commit (/usr/share/kibana/src/legacy/server/config/config.js:132:34)
    at Config.set (/usr/share/kibana/src/legacy/server/config/config.js:102:10)
    at Config.extendSchema (/usr/share/kibana/src/legacy/server/config/config.js:74:10)
    at _lodash.default.each.child (/usr/share/kibana/src/legacy/server/config/config.js:63:14)
    at arrayEach (/usr/share/kibana/node_modules/lodash/index.js:1315:13)
    at Function.<anonymous> (/usr/share/kibana/node_modules/lodash/index.js:3393:13)
    at Config.extendSchema (/usr/share/kibana/src/legacy/server/config/config.js:62:30) name: 'ValidationError' }

[majagrubic (Maja)]

How are you starting kibana? Can you post a bit more of the console output before the error occurs?

[Rios]

You are trying to start Kibana as root user or port number is not OK. Use kibana default user or for root user use ports below 1024 and above 1024 for non-root users.