cannot launch icon

[hpt]

I created a launcher on panel in FC test3 with these commands:

LC_MESSAGES=zh_CN /usr/local/bin/foo

But when I try to lanuch it, always get a error message:

Cannot launch icon

Details: Failed to execute child process "LC_MESSAGES=zh_CN" (No such
file or directory)

But I remember that everything is ok in the past.