Error during file upload.

Error during file upload.
Operation failed. File system input or output error
Operation failed. File system input or output error
Operation failed. File system input or output error

プロセスが残っていたのでKILLしてみたらエラーが消えた。

pi        2960  2883  0 08:57 pts/2    00:00:01 -bash
pi        2990  2960  0 08:57 pts/2    00:00:00 gdbserver :2345 /home/pi/hello/berryHello
pi        2993  2990  0 08:57 pts/2    00:00:00 /home/pi/hello/berryHello
pi        3044  2651  0 12:43 pts/0    00:00:00 ps -ef

$ kill 2990