flet with pypdf2 cannot find file

Question

so I made this app several months ago and it was working fine but now when I ran it now, trying to merge 2 pdf files 1.pdf and 2.pdf it, has an error FileNotFoundError: [Errno 2] No such file or directory: '1.pdf' also the when the Banner_Warning is shown the dismiss button does not work anymore

I can print the value of the pdf file below so I don't get why it says no such file:

for pdf_file in e.files:
            print(f"{pdf_file}")

UPDATE: i can now merge the file using merger.append(pdf_file.path) somehow merger.append(pdf_file.name) does not work anymore but the file is not saving in the same folder but up one level, so the pdf files are inside Python Scripts\Flet but the merged file is being save in Python Scripts folder, anybody have an idea how to save in the same folder?

below is the code and error output:

from PyPDF2 import PdfWriter

import flet as ft

merger = PdfWriter()


class Banner_Warning(ft.UserControl):
    def __init__(self, text_banner: str) -> None:
        super().__init__()
        self.text_banner = text_banner

    def close_banner(self, e: ft.ControlEvent) -> None:
        self.banner.open = False
        self.update

    def build(self) -> ft.Banner:
        self.banner = ft.Banner(
            bgcolor=ft.colors.RED_500,
            leading=ft.Icon(
                ft.icons.WARNING_AMBER_ROUNDED, color=ft.colors.AMBER, size=40
            ),
            content=ft.Text(self.text_banner),
            actions=[ft.TextButton("Dismiss", on_click=self.close_banner)],
        )
        self.banner.open = True
        return self.banner


def main(page: ft.page):

    def merge_pdfs(e: ft.FilePickerResultEvent):

        # get file name and password from the corresponding textfields
        merge_file_name = textField_name.value
        file_password = textField_password1.value

        # show warning when no filename is provided
        if not merge_file_name or merge_file_name == " ":
            # banner for when there is error in file name or file selection
            page.add(Banner_Warning("Please check the file name entered."))
            return None

        # show warning if less than 2 files selected
        if not e.files or len(e.files) < 2:
            # banner for when there is error in file name or file selection
            page.add(Banner_Warning("Please select at least 2 files."))
            return None

        # merge all selected pdf files
        for pdf_file in e.files:
            print(f"{pdf_file}")
            merger.append(pdf_file.name)

        # check if user provided password
        if file_password:
            merger.encrypt(file_password, use_128bit=True)

        # save new pdf file using value of entry input
        merger.write(merge_file_name + ".pdf")
        merger.close()

        # show messagebox merger is complete
        page.snack_bar = ft.SnackBar(ft.Text("PDF file merge complete."))
        page.snack_bar.open = True
        page.update()

    pick_files_dialog = ft.FilePicker(on_result=merge_pdfs)
    page.overlay.append(pick_files_dialog)

    page.title = "Merge PDF"
    page.icon = ft.icons.INFO
    page.window_width = 320
    page.window_height = 300
    page.bgcolor = "gray"
    page.window_center()
    page.window_resizable = False
    page.vertical_alignment = "center"
    page.horizontal_alignment = "center"

    textField_name = ft.TextField(
        label="File Name",
        autofocus=True,
        width=250,
        bgcolor="gray",
        color="yellow",
        border_color="yellow",
    )

    textField_password1 = ft.TextField(
        label="Optional Password",
        password=True,
        can_reveal_password=True,
        autofocus=True,
        width=250,
        bgcolor="gray",
        color="yellow",
        border_color="yellow",
    )

    select_merge_button = ft.ElevatedButton(
        "Select and Merge",
        icon=ft.icons.UPLOAD_FILE,
        on_click=lambda _: pick_files_dialog.pick_files(allow_multiple=True),
        color="black",
        bgcolor="white",
        height=50,
        style=ft.ButtonStyle(shape=ft.RoundedRectangleBorder(radius=5)),
    )

    entriesCol = ft.Column(
        spacing=30,
        controls=[textField_name, textField_password1, select_merge_button],
        horizontal_alignment="center",
    )

    page.add(entriesCol)


if __name__ == "__main__":
    ft.app(target=main)

error output:

 File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.2288.0_x64__qbz5n2kfra8p0\Lib\threading.py", line 1045, in _bootstrap_inner
    self.run()




File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.2288.0_x64__qbz5n2kfra8p0\Lib\threading.py", line 982, in run
    self._target(*self._args, **self._kwargs)




 File "C:\Users\GV\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\flet_core\event_handler.py", line 28, in __sync_handler
    h(r)




File "c:\Users\GV\Box\Documents\Python Scripts\Flet\flet_merge_pdf_oop.py", line 53, in merge_pdfs       
    merger.append(pdf_file.name)


  File "C:\Users\GV\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\PyPDF2\_writer.py", line 2326, in append
    self.merge(

  File "C:\Users\GV\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\PyPDF2\_utils.py", line 417, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\GV\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\PyPDF2\_writer.py", line 2372, in merge
    stream, encryption_obj = self._create_stream(fileobj)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "C:\Users\GV\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\PyPDF2\_writer.py", line 2253, in _create_stream
    with FileIO(fileobj, "rb") as f:
         ^^^^^^^^^^^^^^^^^^^^^

FileNotFoundError: [Errno 2] No such file or directory: '1.pdf'