Thanks for the reply.
Renaming the function was my workaround as well.
I tried everything I could think of. Starting the class blueprint from the scratch, reinstalling the engine, pasting the same blueprint in another project, programming a new blueprint in a new project, but I always end up getting this issue (related to comunication between blueprints).
Renaming the function, compiling, saving all and restarting the editor until there is no more errors was the only workaround I’ve found to keep working…