How can I undo this one my phone which is Huawei p8 lite 2017. This is the
error I'm getting

When FILE is '-', read standard input.  With no FILE, read '.' if
recursive, '-' otherwise.  With fewer than two FILEs, assume -h.
Exit status is 0 if any line is selected, 1 otherwise;
if any error occurs and -q is not given, the exit status is 2.

Kind regards
Belinda