Problem with specific path choosing of epub export

[Palloxin]

Steps to reproduce

1. open export options
2. choose path to raw internal storage (means not in folders inside internal storage, just internal storage)

Expected behavior

Able to choose that path.

Actual behavior

https://github.com/LNReader/lnreader/assets/75091899/428abe52-f1f0-472d-bc80-0e86557bcb83

see error message at the end

LNReader version

1.1.18

Android version

Android 8 miui 8

Device

huawei p8 lite 2017

Other details

EDIT: the same bug applies to external storage

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• [X] I have written a short but informative title.
• [X] If this is an issue with a source, I should be opening an issue in the sources repository.
• [X] I have updated the app to version 1.1.18.
• [X] I will fill out all of the requested information in this form.