Anyone got "ESP8266 OTA Firmware Upgrade Manager" working?

Greetings,
I have imported this flow ESP8266 OTA Firmware Upgrade Manager but the web ui is not loading. Did anyone get this working?

And you have installed all required nodes as well?

Yes, I installed all the pre-requisites.

  1. fs-ops
  2. httpInMultipart
  3. md5

Update:
Solved it, by editing the 'Firmware Config' node. Firmware directory changed from '/home/sysadmin/firmware/' to /home//firmware/