Atril "Segmentation fault (core dumped)"

Atril stopped opening giving this message (got the message when opening from a terminal): Segmentation fault (core dumped)

It worked fine since 20.04 new installation.

What I did one day before was: customize the tools panel adding + and - icons for zoom.

I deleted my users Atril folder at .../config/atril just in case it was this new configuration that had created the error, but I get same error and the folder has not been recreated.

Anyone else with this sudden error? Any idea how to fix it.

thank you

I reinstalled atril with synaptic. Still the same error.

I restarted the computer, and now atril is working normal again.