Hi Pablo,
first of all: Congratulations!
You've managed to produce an error message (in a schedulix environment) which I haven't seen yet.
That's a rare event. I've made most mistakes myself (including the stupid ones), with the effect that troubleshooting is easy most of the time.
But my profound experience in doing things wrongly isn't much of a help now
The file that reports an error is definitely not one of ours.
This doesn't imply in the least that we didn't make the mistake though.
But still the type of error indicates a problem in the Zope installation itself, not so much in the application that runs within Zope.
The question is: how to crack this issue?
I think the best option will be when I try to install the latest Zope (or 5.3 if the latest is newer) myself and see if it breaks for me too.
If so, we can exclude Zope 5.3 from the list of compatible software.
If not, there must be a difference between your installation procedure and mine.
There are several things I'd like to test in a clean environment anyway and this seems to fit in perfectly.
But it'll take a few days as I can't complain about a lack of work to do.
Alternatively you could try to install a previous release of Zope.
If it works, this shows that your Zope 5.3 installation is broken (which need not be your fault).
If it doesn't work, it is pretty sure that you've made a mistake in your installation procedure somewhere.
NB: I'm talking about Zope flaws or mistakes in the installation procedure all te time.
This does not imply that we didn't make a mistake. But I can only investigate this if I can reproduce the issue.
And from the kind of error message, it just seems unlikely that this is caused by the application.
That's why I concentrate on other causes first.
What do you think?
Best regards,
Ronald