run_config.lua:54: attempt to index global 'buf' (a nil value)

[rwkiii]

I have a PANIC error I when running ESPBootloader. What is the proper way of fixing this?

Serial output displays over and over as init.lua is restarted.:

NodeMCU custom build by frightanic.com
branch: master
commit: c8037568571edb5c568c2f8231e4f8ce0683b883
SSL: false
modules: file,gpio,net,node,spi,tmr,u8g,uart,wifi
build built on: 2016-02-03 06:17
powered by Lua 5.1.4 on SDK 1.4.0

5
4
3
2
IP unavailable, waiting.
1
Enter configuration mode
Get available APs
Preparing HTML Form
PANIC: unprotected error in call to Lua API (run_config.lua:54: attempt to index global 'buf' (a nil value))
c_ÇRSöfJSúfJÃjîóïø

[medamarko]

I have same issue. Module ESP12F.

[medamarko]

Seems like the html file was in wrong location. Changingif (file.open('html/configform.html','r')) then to your html file location, solved this error.