"This protocol is not supported before version 1903"

asked 2023-08-05 00:32:29 +0100

Eric Snyder
53 ●2 ●8

Between yesterday and today, My kernel shut down (probably over memory). However, when I restart Sage, I get the following error in the terminal:

/usr/bin/www-browser: line 216: /mnt/c/Windows/System32/reg.exe: Input/output error
/usr/bin/www-browser: line 300: [: -ge: unary operator expected
This protocol is not supported before version 1903

The kernel does not start, Jupyter doesn't open, and open files can't actually be used. I'm a bit kerflummoxed because nothing changed. Does anyone have a clue what could be happening here? The error doesn't indicate version 1903 of what.

Windows 10 running: Ubuntu 22.04.1 Sagemath 9.5 Python 3.10.6

answered 2023-08-05 16:02:46 +0100

slelievre
17704 ●22 ●160 ●350 http://carva.org/samue...

Launching Jupyter involves getting the browser to open a file.

This seems to be the step where the error occurs.

A quick websearch points to a problem with the way WSL opens files:

websearch: "This protocol is not supported before version 1903"

Some of the answers to questions similar to yours recommend running the following in an Ubuntu terminal in WSL:

sudo apt purge wslu

[Independently, consider upgrading from Sage 9.5 to a more recent Sage.]

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Oh dear, I thought I was on the most recent. I'll check into updating as well. Thanks!

Eric Snyder ( 2023-08-06 08:35:55 +0100 )edit

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