I've just done a fresh install with LibreELEC-Generic.x86_64-9.80-nightly-20210216-9a3ba92.img.gz and I am still getting the same error
1 2021-02-18 06:18:09.674 T:980 INFO <general>: SMBFile->Open: Unable to open file : 'smb://USERNAME:[email protected]/Movies/300%20(2007)/poster.jpg'
2 unix_err:'18' error : 'Too many open files'
Not sure why I'm still getting errors.