Can't add webdav server account
My logs:

{"level":50,"time":"2021-12-18T20:27:41.748Z","pid":737,"hostname":"cloud4","name":"System","msg":"Exception while invoking method addWebdavAccount '[object Object] [duplicated-account]'"}
I20211218-20:27:41.750(0) Exception while invoking method addWebdavAccount errorClass [Error]: [object Object] [duplicated-account] at app/webdav/server/methods/addWebdavAccount.js:29:10 at /opt/Rocket.Chat/programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/fiber_pool.js:43:40 => awaited here: at Promise.await (/opt/Rocket.Chat/programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/promise_server.js:60:12) at Server.apply (packages/ddp-server/livedata_server.js:1638:22) at Server.call (packages/ddp-server/livedata_server.js:1607:17) at Object.post (app/api/server/v1/misc.js:416:26) at app/api/server/api.js:407:96 at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12) at Object._internalRouteActionHandler [as action] (app/api/server/api.js:407:39) at Route.share.Route.Route._callEndpoint (packages/nimble_restivus/lib/route.coffee:150:32) at packages/nimble_restivus/lib/route.coffee:59:33 at packages/simple_json-routes.js:98:9 { isClientSafe: true, error: 'duplicated-account', reason: { method: 'addWebdavAccount' }, details: undefined, errorType: 'Meteor.Error' }

Ver. 4.2.0