WIFI Sync error filename.mp3.bin

[lithium]

In my environment, there is no problem when syncing via USB, but when syncing via WIFI, an error occurs.

The error message for WIFI Sync is as follows

2020-12-23: HD1900;  10;  2.0.0
18:02:23: receiveFile: java.lang.IllegalArgumentException: Failed to determine if primary:Music/Playlists/Sync (Filterd).m3u (1).bin is child of primary:: java.io.FileNotFoundException: Missing file for primary:Music/Playlists/Sync (Filterd).m3u (1).bin at /storage/emulated/0/Music/Playlists/Sync (Filterd).m3u (1).bin: file=Music/Playlists/Sync (Filterd).m3u
18:03:04: receiveFile: java.lang.IllegalArgumentException: Failed to determine if primary:Music/Alicia Keys/The Diary of Alicia Keys/02 - Karma.mp3 (1).bin is child of primary:: java.io.FileNotFoundException: Missing file for primary:Music/Alicia Keys/The Diary of Alicia Keys/02 - Karma.mp3 (1).bin at /storage/emulated/0/Music/Alicia Keys/The Diary of Alicia Keys/02 - Karma.mp3 (1).bin: file=Music/Alicia Keys/The Diary of Alicia Keys/02 - Karma.mp3
18:03:04: receiveFile: java.lang.IllegalArgumentException: Failed to determine if primary:Music/Alicia Keys/The Diary of Alicia Keys/03 - Heartburn.mp3 (1).bin is child of primary:: java.io.FileNotFoundException: Missing file for primary:Music/Alicia Keys/The Diary of Alicia Keys/03 - Heartburn.mp3 (1).bin at /storage/emulated/0/Music/Alicia Keys/The Diary of Alicia Keys/03 - Heartburn.mp3 (1).bin: file=Music/Alicia Keys/The Diary of Alicia Keys/03 - Heartburn.mp3

I checked the storage on my smartphone and found that the string ".bin" has been added after the file name.
for example:
02 - Karma.mp3.bin

How can I solve this problem?
thanks,

[lithium]

Resolved.
Changed the application for selecting the internal storage at the first launch, and the problem was resolved.
Application in question: SUI File Explorer

thanks