Lavoisier

Hello,

I want to call a script python with
Lavoisier using Lavoisier 4 version as I don't want to
switch to Lavoisier 12 version yet.
I'm trying to use the lavoisier ShellConnector.
I want to execute a python script from a Lavoisier view.

Currently, I manage to use this ShellConnector for a simple script.
But for the script I want to use I get a ERROR CODE 1.
So my first question is what means ERROR CODE 1?

Moreover, I think the problem comes from the way I give arguments to
the script. Below is the way I pass the arguments in my view to the connector.
I have to type of arguments: arguments expecting a value and single arguments.

<parameter name="arguments">
<entry>--a=val</entry>
<entry>--b</entry>
</parameter>

Is this way the good way?

By advance thanks Flavien Forestier