Reset Web login

[stepman0]

Describe the bug
I enable username and password for weblogin. Something went wrong (probably on my side), now I cannot login with the password saved in my password manager.

How can I reset the password? I still have access via MQTT.

Device information

• Screenshot of Zigbee and Device tab from root page of device
• JSON object returned on http://xzg.local/api?action=1&param=all
  You should remove your credentials first

To Reproduce
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4. See error

Expected behavior
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