Can't Open my Favorite File

[ianfreds]

Stack:

LDtk version: 1.5.3-64bits
Cannot read properties of null (reading 'externalLevels')
TypeError
TypeError: Cannot read properties of null (reading 'externalLevels')
    at Object.cb (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:285488:8)
    at ui_modal_Progress.update (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:292554:8)
    at dn_Process._doMainUpdate (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:405:4)
    at dn_Process.updateAll (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:675:14)
    at Boot.update (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:5190:14)
    at Boot.mainLoop (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:5152:8)
    at hxd_System.browserLoop (file:///C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/js/renderer.js:190796:14)

Processes:

#0 App
 |--- #1 page.Home
 |--- #4 page.Home
 |--- #6 page.Home
#3 ui.modal.Progress
#5 ui.modal.dialog.LogPrint
#7 ui.modal.dialog.LogPrint

Log:

[BOOT]         App started
[BOOT]         Version: 1.5.3-64bits (build 473703)
[BOOT]         ExePath: C:/Users/ianfr/AppData/Local/Programs/ldtk
[BOOT]         Assets: C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets
[BOOT]         ExtraFiles: C:/Users/ianfr/AppData/Local/Programs/ldtk/extraFiles
[BOOT]         CWD: C:\Users\ianfr\AppData\Local\Programs\ldtk\
[BOOT]         Display: 1920x1080
[BOOT]         Args: soloValues=[], args=[]
[FILE]         Loading settings from C:/Users/ianfr/AppData/Roaming/LDtk/settings...
[BOOT]         AppZoomFactor: 1
[BOOT]         Calling appReady...
[UPDATE]       Looking for update
[BOOT]         Start args: path=null levelIndex=null
[BOOT]         Loading Home...
[GENERAL]      Page started: page.Home()
[FILE]         Loading page template: home from C:/Users/ianfr/AppData/Local/Programs/ldtk/resources/app.asar/assets/tpl/pages/home.html
[DEBUG]        samplesDir=C:/Users/ianfr/AppData/Local/Programs/ldtk/extraFiles/samples
[GENERAL]      Progress created.
[GENERAL]      Progress started: : "docks_sample.ldtk: Project...", 5 operation(s)
[LOAD]         Loading project docks_sample.ldtk...
[ERROR]        SyntaxError: Unexpected token '