[Python] tkinter pyimage doesn't exist error when trying to place a photoi in a label

I'm trying to show a photo in a label from a URL. It works fine getting the photo from the URL but then when i try to make it on a label is shows _tkinter.TclError: image "pyimage196" doesn't exist This is the code I'm using

u = urllib.request.urlopen(self.url)
raw_data = u.read()
u.close()
im = Image.open(BytesIO(raw_data))
photo =ImageTk.PhotoImage(im)
self.photo = photo
image_label = tk.Label(infowindow, text="", image=photo)
image_label.pack()

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