Valetudo: Valetudo not able to reach the robot

Describe the bug

Valetudo starts up all fine with the following output:

[2021-02-03T14:34:04.609Z] [INFO] Loading configuration file: /mnt/data/valetudo_config.json
[2021-02-03T14:34:04.640Z] [INFO] Autodetected RoborockS6PureValetudoRobot
[2021-02-03T14:34:04.807Z] [INFO] Starting Valetudo 2021.01.1
[2021-02-03T14:34:04.808Z] [INFO] Robot: Beijing Roborock Technology Co., Ltd. S6 Pure (RoborockS6PureValetudoRobot)
[2021-02-03T14:34:04.809Z] [INFO] JS Runtime Version v14.4.0
[2021-02-03T14:34:04.810Z] [INFO] Max Heap Size: 33.5 MiB
[2021-02-03T14:34:04.810Z] [INFO] Node Flags: --max-old-space-size=32
[2021-02-03T14:34:04.812Z] [INFO] DeviceId 322058607
[2021-02-03T14:34:04.812Z] [INFO] IP 127.0.0.1
[2021-02-03T14:34:04.813Z] [INFO] CloudSecret *********************
[2021-02-03T14:34:04.814Z] [INFO] LocalSecret ********************
[2021-02-03T14:34:04.983Z] [INFO] Dummycloud is spoofing 203.0.113.1:8053 on 203.0.113.1:8053
[2021-02-03T14:34:04.985Z] [INFO] Webserver running on port 80
[2021-02-03T14:34:04.992Z] [INFO] Map Upload Server running on port 8079

But after connecting to the Web interface it shows the following errors:

[2021-02-03T14:34:19.183Z] [WARN] Token is okay, however we're unable to reach the vacuum { retries: 10, method: 'get_status', args: {} }
[2021-02-03T14:34:19.206Z] [WARN] Token is okay, however we're unable to reach the vacuum { retries: 20, method: 'get_status', args: {} }
.
.
.
[2021-02-03T14:34:21.188Z] [WARN] Token is okay, however we're unable to reach the vacuum { retries: 10000, method: 'get_status', args: {} }
[2021-02-03T14:34:21.341Z] [ERROR] Unable to reach vacuum
[2021-02-03T14:34:21.343Z] [INFO] exiting with code 1...
[2021-02-03T14:34:21.346Z] [ERROR] Stacktrace that lead to the process exiting: Error
    at process.<anonymous> (/snapshot/Valetudo/index.js:34:70)
    at process.emit (events.js:315:20)
    at process.exit (internal/process/per_thread.js:167:15)
    at Timeout._onTimeout (/snapshot/Valetudo/lib/miio/RetryWrapper.js:125:29)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7)
[root@rockrobo ~]# rr_boot_flags -s

To Reproduce

1. Install latest image from Dustbuilder
2. Open the Web interface
3. Read the logfile

Vacuum Model

Roborock S6 Pure

Valetudo Version

2021.01.1

Firmware Version

ver 0938, 10/2020

User-Agent

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0

Expected behavior

Valetudo should connect to the robot and should show the information about it on the Web interface instead of crashing.

Additional context

The config file is the default one of Valetudo