Regular crashes within _styles_cache.py

[GrizzlyFr]

I use Textual as an interface for running long industrial tests (e.g. two weeks span). At some seemingly random moments, my interface crashes.

It happens always in the same function of _styles_cache.py, for a missing "Y" key error. In my interface, I use a Log widget to display the INFO level logging entries (while all levels including INFO are put in a file). It seems that Textual crashes when writing a log entry to the Log widget.

I can't provide the code as it is linked to a physical test bench. But I did attached the exception trace and a screenshot of my interface.

I have no clue on how to fix it at least temporarily in order to complete my tests. Any suggestions ?

PS : Below the "textual diagnose", the screenshot and the trace:

Versions

Name	Value
Textual	3.2.0
Rich	13.9.4

Python

Name	Value
Version	3.10.12
Implementation	CPython
Compiler	GCC 11.4.0
Executable	/home/user

/Documents/main_controller/venv/bin/python3 |

Operating System

Name	Value
System	Linux
Release	5.15.0-138-generic
Version	#148-Ubuntu SMP Fri Mar 14 19:05:48 UTC 2025

Terminal

Name	Value
Terminal Application	Unknown
TERM	xterm-256color
COLORTERM	truecolor
FORCE_COLOR	Not set
NO_COLOR	Not set

Rich Console options

Name	Value
size	width=238, height=57
legacy_windows	False
min_width	1
max_width	238
is_terminal	True
encoding	utf-8
max_height	57
justify	None
overflow	None
no_wrap	False
highlight	None
markup	None
height	None

textual_crash_trace.txt

[willmcgugan]

The traceback suggests you aren't running on the latest version. The line numbers don't match what I would expect for the latest version. I'd look into the environment that is running the app. The exception looks familiar. I suspect an upgrade will fix it.

[GrizzlyFr]

As I understand it, 3.2.0 is the latest version. If not, could you please provide me with a specific version to try?

[willmcgugan]

3.2.0 is the latest version, but the attached traceback was running an earlier version.

[GrizzlyFr]

Ok. I am confused as I don't have Textual outside the venv and I don't remember upgrading the package between the traceback generation and the textual diagnose.

Anyway, I launch a new test to be sure. Results in six days...

Thanks Will