errors · bitdewfpga sim / bit, before anything runs

ERROR [file-name-with-space]: 'my blink.sv': file names with spaces are not supported by the tools. Fix: rename it (e.g. my_blink.sv).

ERROR [file-name-with-space]: 'my blink.sv': file names with spaces are not supported by the tools. Fix: rename it (e.g. my_blink.sv). https://nosey-dewdrop.github.io/dewfpga/errors/file-name-with-space/

Why does it happen?

The tools are given the file names on one command line, split at spaces; my blink.sv would arrive as two files that do not exist.

What is the fix?

mv "my blink.sv" my_blink.sv

Which command prints it?