1) The file I tried to open yesterday was indeed IMG_1809.JPG, and the error pops up saying it is not a directory. I reproduced the error message today in my system, so let me give you another log files today.
2) Yes indeed.
3) Yes, I accessed the files from the same system, as my system appeared in Nautilus.
4) I made another shared folder in my home folder and the symptom was exactly the same.
Though I figured out something strange in the process. This time I tried to share 4 different files. 3 files (m4a, pdf, jpg file) were from my macOS system, and copied through samba protocol (I'm still able to write to shared folder. Unable to read it properly though). 1 file (jpg file) was a random macbook image from the internet. All 3 files from my macOS system showed as folders, while random macbook image from the internet showed properly. I think I need to figure out which kind of files were affected...
1) The file I tried to open yesterday was indeed IMG_1809.JPG, and the error pops up saying it is not a directory. I reproduced the error message today in my system, so let me give you another log files today.
2) Yes indeed.
3) Yes, I accessed the files from the same system, as my system appeared in Nautilus.
4) I made another shared folder in my home folder and the symptom was exactly the same.
Though I figured out something strange in the process. This time I tried to share 4 different files. 3 files (m4a, pdf, jpg file) were from my macOS system, and copied through samba protocol (I'm still able to write to shared folder. Unable to read it properly though). 1 file (jpg file) was a random macbook image from the internet. All 3 files from my macOS system showed as folders, while random macbook image from the internet showed properly. I think I need to figure out which kind of files were affected...
Some screenshots and log files were attached.