[Tkinter] image doesnt exists into personal module

[PyForIO]

Are you really read my code?

First trying:
=> self.img_logo is initialized into class Gui() (in first script), here line 17 - same for self logo, and self.icon (line 16, 18)...
=> and is built into def ui(), in lines 74-76.
=> when you clic on menu about, the def about() is called; into this method, i code a dict named init - lines 26=>37. this is passed to def __init__() into script 'window_about.py'.
=> into the script 'window_about.py', the self.img_logo is called - line 37 - after builded into lines 15,16

'self.img_logo' is value after 'pimg.open()' of 'self.logo' and pimgtk.Photoimage()...

To be sure 'self.logo', 'self.icon' and 'self.img_logo' is builded, into script 'windows_about.py', i displaying thoses by print - line 17, as we see at the beginning of the error message:

self.DESCR: Yet Uploader Pixxie.py
self.dir: ~/YUP.py
self.icon: ~/YUP.py/img/Logo.xbm
self.img_logo: pyimage2
self.logo: ~/YUP.py/img/Logo.png
self.NAME: YUPixxie

Second trying:
=> i called only 'self.logo' into 'window_about.py', passed by init...
=> and build 'img_logo' after passing into 'pimg.open()' and 'pimgtk.PhotoImage()'...

Into 'window_about.py' script, if i code as:

## Add an image logo
        print(f'{self.logo}')
        img = pimg.open(self.logo)
        icon = pimgtk.PhotoImage(img)
        img_service = ttk.Label(frm_service, image=icon)
        img_service.grid(row=0, column=0, rowspan=2)

the result is:

Error:
~/YUP.py/img/Logo.png
Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/tkinter/__init__.py", line 1699, in __call__
    return self.func(*args)
  File "~/YUP.py/yup.tk.py", line 436, in about
    about = gui(None, init)
  File "~/YUP.py/modules/window_about.py", line 34, in __init__
    self.initialize()
  File "~/YUP.py/modules/window_about.py", line 41, in initialize
    self.ui()
  File "~/YUP.py/modules/window_about.py", line 68, in ui
    img_service = ttk.Label(frm_service, image=icon)
  File "/usr/local/lib/python3.6/tkinter/ttk.py", line 761, in __init__
    Widget.__init__(self, master, "ttk::label", kw)
  File "/usr/local/lib/python3.6/tkinter/ttk.py", line 559, in __init__
    tkinter.Widget.__init__(self, master, widgetname, kw=kw)
  File "/usr/local/lib/python3.6/tkinter/__init__.py", line 2293, in __init__
    (widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: image "pyimage3" doesn't exist

Do you want a screenshot for my directory image?

i repeat: 'self.logo' is same image, into same directory, on first script 'yup.tk.py' and on 'window_about.py' - this second script is call by the first!
and 'self.logo' is passed to script 'window_about.py'...