[Tkinter] How to insert data json to treeview tkinter?

[Shakanrose]

does not work with load, it says

Error:
AttributeError: 'str' object has no attribute 'read'

with loads it shows me the json data in the treeview.

Now I have another question, I have some entries to be able to modify the data obtained from the treeview. These work and when I modify them in the tree they are updated, but how would I call the json in this situation to update the values and not to add them as another object in the list?

with this I select the object in the tree

    def select_record():
        logo_lb.delete(0,END) 
        nombre_lb.delete(0,END)
        tenantid_lb.delete(0,END)
        aplicationid_lb.delete(0,END)
        secretid_lb.delete(0,END)
        token_lb.delete(0,END)
        periodicidad_lb.delete(0,END)
        region_combobox2.delete(0,END)

        selected = json_tree.focus() e
        values = json_tree.item(selected,'values') 
        
        logo_lb.insert(0, values[0]) 
        nombre_lb.insert(0,values[1])
        tenantid_lb.insert(0,values[2])
        aplicationid_lb.insert(0,values[3])
        secretid_lb.insert(0,values[4])
        token_lb.insert(0,values[5])
        periodicidad_lb.insert(0,values[6])
        region_combobox2.insert(0,values[7])

with this I save the updates, which are only visualized in the tree but as it is not connected with the json, the changes are not made in the file.

 def update_record():
     selected = json_tree.focus()      
     json_tree.item(selected, text='', values=(logo_lb.get(),nombre_lb.get(),tenantid_lb.get(),aplicationid_lb.get(),secretid_lb.get(),token_lb.get(),periodicidad_lb.get(),region_combobox2.get())) 

        logo_lb.delete(0,END) 
        nombre_lb.delete(0,END)
        tenantid_lb.delete(0,END)
        aplicationid_lb.delete(0,END)
        secretid_lb.delete(0,END)
        token_lb.delete(0,END)
        periodicidad_lb.delete(0,END)
        region_combobox2.delete(0,END)