I don’t know if this is the correct sub because I don’t know if it is a bug.
I would have no clue what would lead to this message, but it is not the case that there are too many open files ! Is there a .json where open files are written to? I only had one file open in the main window, one opened in a detached window.
I would have to read up on how to get open files that are really file-like things without sockets and stuff. But still one can’t say how many open notes that means. Maybe one could filter by .md file-type.
But I think I am well above 2^16:
$ cat /proc/sys/fs/file-max
I don’t know which of these two is the significant one but I will read up on what is recommended.