How can I get my loading circle GIF frames to display on a Tkinter Canvas?

Question

I am having trouble getting a loading circle GIF to display on a Tkinter Canvas in my game's support window. My game is called Space Invaders Supreme, and it is built with pygame. I am using root.after() to make each frame display after a certain amount of time, so that the frames will appear to be 1 animated GIF. I have tried everything I can think of, but it still just won't display. If someone can help me, I would really appreciate it! Thanks in advance!

Here is the relevant code:

    def setupLoadingCircleCanvasAndGIFFrames():
        global loading_circle_canvas
        global loading_circle_gif
        global current_loading_circle_gif_frame_num
        global loading_circle_gif_frames
        
        loading_circle_gif_frames=[]
        
        for i in range(number_of_loading_circle_gif_frames):
            loading_circle_gif_frames.append(PhotoImage(file='loading_circle.gif', format='gif -index '+str(i)))
        
        loading_circle_canvas=Canvas(width=96, height=54, bg='gray87', highlightthickness=0)
        loading_circle_canvas.place(relx=0.5, rely=0.7, anchor=CENTER)   
        current_loading_circle_gif_frame_num=1
        
    def switchToNextLoadingCircleGIFFrame():
        global value_3
        global current_loading_circle_gif_frame_num
        
        current_loading_circle_gif_frame_num+=1
        
        if current_loading_circle_gif_frame_num>152:
            current_loading_circle_gif_frame_num=1
            
        loading_circle_canvas.delete('all')
        loading_circle_canvas.create_image(48, 27, image=loading_circle_gif_frames[current_loading_circle_gif_frame_num-1], anchor=CENTER)
        loading_circle_canvas.itemconfig(1, state='normal')
    
        value_3=support_win.after(50, switchToNextLoadingCircleGIFFrame)
        
    def showLoadingCircleGIF():
        global value_3
        
        loading_circle_canvas.create_image(48, 27, image=loading_circle_gif_frames[0], anchor=CENTER)
        loading_circle_canvas.itemconfig(1, state='normal')
        
        value_3=support_win.after(50, switchToNextLoadingCircleGIFFrame)
        
    def hideLoadingCircleGIF():
        support_win.after_cancel(value_3)
        loading_circle_canvas.destroy()
        
    def submitFormIfSenderEmailValid():
        if pag.confirm(text='Are you sure you want to submit this form?', title='Confirm Form Submission', buttons=['OK', 'Cancel'])=='OK':
            try:
                global support_win
                global player_email_entry
                global player_first_name_entry
                global player_last_name_entry
                global issue_type_dropdown
                global issue_urgency_dropdown
                global issue_description_st
                global selected_attachments_st
                global selected_attachment_info_strs
                global selected_attachment_full_paths
        
                player_email=player_email_entry.get()
                player_first_name=player_first_name_entry.get()
                player_last_name=player_last_name_entry.get()
                issue_type_str=issue_urgency_dropdown.get()
                issue_urgency_str=issue_urgency_dropdown.get()
                issue_description=issue_description_st.get(1.0, END)
                
                showLoadingCircleGIF()
                o=og.OGESS(player_email, player_first_name, player_last_name, issue_type_str, issue_urgency_str, issue_description, selected_attachment_full_paths)
                o.sendEmail()
                hideLoadingCircleGIF()
                
            except ValueError as error:
                pag.alert(text='At least one of the required fields was given an invalid value, so the support request email could not be sent! Please fix the problem and try again!', button='OK')
            except TypeError as error:
                pag.alert(text='At least one of the required fields was given an invalid value, so the support request email could not be sent! Please fix the problem and try again!', button='OK')
                
    def showSupportWindow():
        global support_win
        global player_email_entry
        global player_first_name_entry
        global player_last_name_entry
        global issue_type_dropdown
        global issue_urgency_dropdown
        global issue_description_st
        global selected_attachments_st
        global selected_attachment_info_strs
        global selected_attachment_full_paths
        
        if game_state=='running':
            global game_paused
    
            game_paused=True
            
        support_win=Tk()
        support_win.title('Space Invaders Supreme -- Support')
        support_win.geometry('1100x900')
        support_win.resizable(False, False)
        support_win.iconphoto(False, PhotoImage(file=r'C:\Users\willn\OneDrive\Documents\Code Folders\Python Code Files\PyGame Folders\Space Invaders Supreme Files\planet.png'))
        support_win.configure(bg='gray87')
        
        support_win_title_label=Label(support_win, text='Space Invaders Supreme -- Support', font=('Arial', 18, 'bold'), bg='white')
        support_win_title_label.place(relx=0.5, rely=0.05, anchor=CENTER)
        
        player_email_entry=Entry(support_win)
        player_email_prompt_label=Label(support_win, text='Email:')
        player_first_name_entry=Entry(support_win)
        player_first_name_prompt_label=Label(support_win, text='First Name:')
        player_last_name_entry=Entry(support_win)
        player_last_name_prompt_label=Label(support_win, text='Last Name:')
        
        player_email_prompt_label.place(relx=0.075, rely=0.125, anchor=CENTER)
        player_first_name_prompt_label.place(relx=0.075, rely=0.175, anchor=CENTER)
        player_last_name_prompt_label.place(relx=0.075, rely=0.225, anchor=CENTER)
        player_email_entry.place(relx=0.25, rely=0.125, anchor=CENTER)
        player_first_name_entry.place(relx=0.25, rely=0.175, anchor=CENTER)
        player_last_name_entry.place(relx=0.25, rely=0.225, anchor=CENTER)
        
        issue_type_dropdown=ttk.Combobox(support_win, state='readonly', values=['Bug', 'Question', 'Suggestion', 'Complaint', 'Report', 'Other'])
        issue_type_prompt_label=Label(support_win, text='Issue Type:')
        issue_urgency_dropdown=ttk.Combobox(support_win, state='readonly', values=['Very High', 'High', 'Average', 'Low', 'Very Low'])
        issue_urgency_prompt_label=Label(support_win, text='Issue Urgency:')
        
        issue_type_dropdown.current(0)
        issue_urgency_dropdown.current(2)
        issue_type_prompt_label.place(relx=0.075, rely=0.275, anchor=CENTER)
        issue_urgency_prompt_label.place(relx=0.075, rely=0.325, anchor=CENTER)
        issue_type_dropdown.place(relx=0.25, rely=0.275, anchor=CENTER)
        issue_urgency_dropdown.place(relx=0.25, rely=0.325, anchor=CENTER)
        
        issue_description_st=ScrolledText(support_win, wrap=WORD, width=30, height=9, font=('Arial', 9))
        issue_description_prompt=Label(support_win, text='Issue Description:')
        
        issue_description_prompt.place(relx=0.8, rely=0.125, anchor=CENTER)
        issue_description_st.place(relx=0.8, rely=0.25, anchor=CENTER) 
        
        select_attachments_button=Button(support_win, text='Select Attachments', bg='gray', fg='white', command=showSelectAttachmentsDialog)
        remove_attachments_button=Button(support_win, text='Remove Attachments', bg='gray', fg='white', command=showRemoveAttachmentsDialog)
        selected_attachments_st=ScrolledText(support_win, wrap=WORD, width=60, height=3, font=('Arial', 9))
        selected_attachment_info_strs=[]
        selected_attachment_full_paths=[]
        
        select_attachments_button.place(relx=0.5, rely=0.45, anchor=CENTER)
        remove_attachments_button.place(relx=0.5, rely=0.6, anchor=CENTER)
        selected_attachments_st.insert(1.0, 'Selected Attachments:\n')
        selected_attachments_st.configure(state='disabled')
        selected_attachments_st.place(relx=0.5, rely=0.525, anchor=CENTER)
    
        reset_form_button=Button(support_win, text='Reset', bg='grey', fg='white', padx=52.25, command=resetSupportWindow)
        submit_form_button=Button(support_win, text='Submit', bg='grey', fg='white', padx=52.25, command=submitFormIfSenderEmailValid)
        
        reset_form_button.place(relx=0.4, rely=0.95, anchor=CENTER)
        submit_form_button.place(relx=0.6, rely=0.95, anchor=CENTER)
        setupLoadingCircleCanvasAndGIFFrames()
        
        support_win.mainloop()
    
        if game_state=='running':
            game_paused=False