"Illegal instruction (core dumped)"-error in Annif tutorial

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Christian Oppermann

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Oct 15, 2025, 8:29:34 AMOct 15

to Annif Users

Dear Annif community,

after working with Annif tutorial (VirtualBox based installation on Win11) for a couple of weeks without any problem the error "Illegal instruction (core dumped)" occured recently, when entering the command "annif list-projects". Same problem with the command "annif run", after reloading the browser. Other commands seem to work properly.

I have deleted some old projects to gain more capacity, but the error still occurs. How can I solve this problem without reinstalling Annif tutorial?

I am very grateful for any idea on this issue.

Thank you

Christian

juho.i...@helsinki.fi

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Oct 15, 2025, 8:47:00 AMOct 15

to Annif Users

Dear Christian,

Strange that this started to occur after Annif has already been working fine. Maybe you have recently installed the nn_ensemble optional dependency (which installs TensorFlow).

Anyway, these instructions in the Install exercise can maybe help: https://github.com/NatLibFi/Annif-tutorial/blob/main/exercises/01_install_annif.md#:~:text=The probable cause is that AVX support