[Bug] TypeError: %d format: a number is required, not NoneType

[Kristinita]

1. Summary

Commands don't run for me after first time, I get stack trace in console.

2. Settings

My .onsave file:

LISTENER:

  - CMD : subl --command select_all

If I change select_all to any other Sublime Text command → I get same behavior.

3. Steps to reproduce

I reproduce the problem in a version of Sublime Text without plugins and user settings.

I install On Save → I create .onsave file in root directory of my project → I restart Sublime Text → I open any file in my project → I run save Sublime Text command (Ctrl+S in Windows).

4. Expected behavior

Successful run select_all command any number of times in session if I save file.

If I run subl --command select_all in terminal, I don't have errors.

5. Actual behavior

Text of my file select, I get stack trace:

key evt: control+s
command: save
command: select_all
Exception in thread Thread-9:
Traceback (most recent call last):
  File "./python3.3/threading.py", line 901, in _bootstrap_inner
  File "./python3.3/threading.py", line 858, in run
  File "exec in D:\Sublime Text Build 3126 x64 For Debug\Packages\Default.sublime-package", line 143, in read_stdout
  File "program.cmd_queue in D:\Sublime Text Build 3126 x64 For Debug\Data\Installed Packages\On Save.sublime-package", line 88, in on_finished
TypeError: %d format: a number is required, not NoneType

Second time, when I save my file, text not select.

6. Environment

Operating system and version:
Windows 10 Enterprise LTSB 64-bit EN
Sublime Text:
Build 3126
Package:
I use the latest version of this package for Sublime Text 3

Thanks.