Moving files with " and * caused error

* is a glob operator of the shell. It needs to be left unquoted to be recognised as such. When quoted, /media/sf_Mediaserver3/test22/abbamax.(6th.copy)..kansas.(1999)/* is passed literally to mv and mv tries to move that file called *, and there's no such file.

So you need:

mv -v -- "$jdir0"/* "$jdir0/subs/" >> "$debuglog" 2>&1

For the shell to expand "$jdir0"/* into the list of matching files before calling mv.

You do not want nullglob here as that would mean that in the absence of files matching that "$jdir0"/* pattern, mv would be invoked with just -v, -- and media/sf_Mediaserver3/test22/abbamax.(6th.copy)..kansas.(1999)/subs/ causing a confusing syntax error by mv.

failglob to abort command when the globs don't match may be a better option in that case, though note that bash aborts in inconsistent ways in that case depending on the context the command is invoked in, which makes that option tricky to use in scripts.

dotglob is to allow globs to match hidden files.

Now, note that globs match files regardless of their type¹, so that * above will also match subs. If subs is a symlink to a directory, mv will happily move that subs symlink into that directory, causing all subsequent moves to fail as the subs target directory is now gone. If subs is a plain subdirectory, mv will likely complain that it can't move a directory into itself.

So you may want to write it instead:

shopt -s extglob
mv -v -- "$jdir0"/!(subs) "$jdir0/subs/" >> "$debuglog" 2>&1

Where !(pattern) is the ksh extended glob operator that matches on any filename that does not match pattern, so here moving any file but subs.

Also note that in the bash shell, parameter expansions also need to be quoted when in targets of redirections even in non-interactive shell instances (except when bash is in POSIX mode).

^{¹ unless you use zsh instead of bash and its glob qualifiers such as *(.) to move only regular files}