ok, wooooo, I had to delete the content/addtoany plugin that previously apparently worked
please, try now
However there are still strange problems, as some custom modules that first worked now return "call to undefined..."
It's mod_custom
but this one yesterday worked...
EDIT: I deleted some trash from extensions, plugin and modules, now it works better, please let me know if you find some solution for the "Webasset" error...
EDIT 2: after some tweak not related, now mod_custom
works well, as it should do.