Uncaught TypeError: Cannot read property 'length' of undefined

[catchthemonster]

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.54.0 x64
Electron: 6.1.12
OS: linux 5.11.1-arch1-1
Thrown From: dbg package 1.6.3

Stack Trace

Uncaught TypeError: Cannot read property 'length' of undefined

At /usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:1323

TypeError: Cannot read property 'length' of undefined
    at exports.extentForText (/usr/lib/atom/node_modules/text-buffer/lib/helpers.js:81:29)
    at TextBuffer.setTextInRange (/usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:871:40)
    at /usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:850:49
    at TextBuffer.transact (/usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:1320:16)
    at TextBuffer.setTextInRange (/usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:850:29)
    at TextBuffer.setText (/usr/lib/atom/node_modules/text-buffer/lib/text-buffer.js:780:17)
    at CustomPanel.module.exports.CustomPanel.pickFile (/packages/dbg/lib/view/CustomPanel.coffee:147:33)
    at /packages/dbg/lib/view/CustomPanel.coffee:67:44)

Commands

     -0:29.5.0 dbg:custom-debug (input.hidden-input)

Non-Core Packages

atom-clock 0.1.18 
dbg 1.6.3 
dbg-gdb 1.7.8 
hey-pane 1.2.0 
output-panel 0.3.4 
scroll-through-time 0.3.1