Method get_items_for_portfolio not returning all items

Hi! I am having troubles with the method get_items_for_portfolio from the portfolios_api python library.
I always used this method, but since last night it isn’t returning all items from the portifólio anymore! Example: One of my portifolios has 59 projects, and the method is returning only 2, while for other portifólios it returns all the items.

These are the option fields that I’m using (didn’t change anything in the api call, the only thing that i made this week was to create another custom field inside my portifólio):

    opts = {
        'opt_fields': 'name,team.name,owner.name,owner.email,current_status,start_on,due_on,custom_fields.name,'
                      'custom_fields.display_value,custom_fields.number_value,custom_fields.date_value,custom_fields.enum_value'
    }

Anyone also having this trouble? Can you please help me? it affects other applications of my company that reads my projects database!! Thanks in avance,

Problem solved using manual api request: there is some problem in the python sdk that I was not abble to identify