'NoneType' object has no attribute 'project_file_name'

[ivanionut]

Hi @jcberquist
something strange happens with ST4 when I perform the following actions:

• cmd + p: to open a file
• cmd + option + 2: to split the editor into two columns
• (on the right column) cmd + p: to open a file
• still on the right column: cmd + t to open a file in a new tab: At this point I get the error below and the split editor "crashes" and returns to a single column.

Here's the error stack trace:

Traceback (most recent call last):
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 898, in on_load_async
    run_view_callbacks('on_load_async', view_id)
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 741, in run_view_callbacks
    callback(v, *args)
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 202, in exception_handler
    return event_handler(*args)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/cfml_plugin.py", line 16, in on_load_async
    events.trigger("on_load_async", view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/events.py", line 13, in trigger
    callback(*event_args)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/buffer_metadata.py", line 110, in on_view_loaded
    get_view_metadata(view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/buffer_metadata.py", line 76, in get_view_metadata
    project_name = utils.get_project_name(view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/utils.py", line 27, in get_project_name
    project_file_name = view.window().project_file_name()
AttributeError: 'NoneType' object has no attribute 'project_file_name'
Traceback (most recent call last):
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 898, in on_load_async
    run_view_callbacks('on_load_async', view_id)
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 741, in run_view_callbacks
    callback(v, *args)
  File "/Applications/Sublime Text.app/Contents/MacOS/Lib/python38/sublime_plugin.py", line 202, in exception_handler
    return event_handler(*args)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/cfml_plugin.py", line 16, in on_load_async
    events.trigger("on_load_async", view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/events.py", line 13, in trigger
    callback(*event_args)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/buffer_metadata.py", line 110, in on_view_loaded
    get_view_metadata(view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/buffer_metadata.py", line 76, in get_view_metadata
    project_name = utils.get_project_name(view)
  File "/Users/ivanionut/Library/Application Support/Sublime Text/Installed Packages/CFML.sublime-package/src/utils.py", line 27, in get_project_name
    project_file_name = view.window().project_file_name()
AttributeError: 'NoneType' object has no attribute 'project_file_name'

[ivanionut]

Hi @jcberquist ,
Do you have any ideas about this? Do you need any additional data that could help with debugging?

Or should I try to modify something in my project (some workaround) to temporarily fix this issue?

Thanks!

[jcberquist]

I don't use a Mac, so it would be helpful to know what exactly cmd + t is doing. In the default mac key binding file, the binding for cmd + p and cmd + t look exactly the same to me:

{ "keys": ["super+t"], "command": "show_overlay", "args": {"overlay": "goto", "show_files": true} },
{ "keys": ["super+p"], "command": "show_overlay", "args": {"overlay": "goto", "show_files": true} },

Are you overriding the default key bindings?

That said, while I am not sure why the error that you show above causes the pane to crash, I should look into whether it can be avoided. It is an error I have seen myself, but since it wasn't causing any crashes, I haven't gotten around to looking into it.

[ivanionut]

@jcberquist

Are you overriding the default key bindings?

These are the only customizations of Default.sublime-keymap:

[
    { "keys": ["super+k", "super+b"], "command": "toggle_sidebar_and_reveal_file" },

    {
        "keys": ["ctrl+shift+tab"],
        "command": "compass_show",
        "context": [
            { "key": "overlay_visible", "operator": "equal", "operand": false },
            { "key": "compass" },
        ]
    }
]

If it might be helpful, I can also make a screen video recording:
https://drive.google.com/file/d/1oK1f6FwDYIs5fa13wAZu0wvosc1-Uy7k/view?usp=sharing