when trying to open the elementor editor a critical error appears

Hi!

I have problems with elementor editor since yesterday (2021-03-10).
I created a new portfolio item with elementor. I went out, and later, when I wanted to edit it, it didn’t open and a critical error appeared. The other items, wich were created before, run ok.

I tried to edit with the wordpress editor but neither, it doesn′t open.
The fast editor runs ok, and also preview option.

I contacted with wordpress support and realised that the critical error is coming from the Visual Portfolio plugin

The item I’m trying to edit is “II Ascensión Vegana al Txindoki (Gipuzkoa)” (https://movimientoantiespecistalleo.com/wp-admin/edit.php?post_type=portfolio&portfolio_category=ascensiones)

And the error appears here, when clicking on edit: https://movimientoantiespecistalleo.com/wp-admin/post.php?post=6620&action=edit

Also, and just in case that it is related with the problem, since this problem has appear, everything work slower on the site: when opening the editor (in other items), when attaching images from the wordpress library they don’t charge or it takes a long time to charge…

I hope the error can be fixed, because I love the Visual Portfolio plugin.

Thanks

The page I need help with: [log in to see the link]