a novice user trying to run the server on Mac

[yoshikiohshima]

I modified the paths in lively4S1.sh, install gulp with npm install gulp, and run it, but got this error:

---

bash-3.2$ bin/lively4S1.sh
LIVELY /Users/ohshima/src/lively4/
SERVER /Users/ohshima/src/lively4/lively4-server/
~/src/lively4 ~/src/lively4
restart http server Fri Apr 20 10:09:02 CEST 2018
~/src/lively4/lively4-server ~/src/lively4 ~/src/lively4
Already up-to-date.
~/src/lively4 ~/src/lively4
~/src/lively4/lively4-server ~/src/lively4 ~/src/lively4
[10:09:07] Using gulpfile ~/src/lively4/lively4-server/gulpfile.js
[10:09:07] Starting 'babel'...
[10:09:08] Finished 'babel' after 1.24 s
~/src/lively4 ~/src/lively4
sed: illegal option -- u
usage: sed script [-Ealn] [-i extension] [file ...]
sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
sed: illegal option -- u
usage: sed script [-Ealn] [-i extension] [file ...]
sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
events.js:160
throw er; // Unhandled 'error' event
^

Error: write EPIPE
at exports._errnoException (util.js:1020:11)
at WriteWrap.afterWrite (net.js:800:14)
restart http server Fri Apr 20 10:09:10 CEST 2018
~/src/lively4/lively4-server ~/src/lively4 ~/src/lively4
Already up-to-date.
~/src/lively4 ~/src/lively4
~/src/lively4/lively4-server ~/src/lively4 ~/src/lively4
[10:09:12] Using gulpfile ~/src/lively4/lively4-server/gulpfile.js
[10:09:12] Starting 'babel'...
[10:09:13] Finished 'babel' after 1.24 s
~/src/lively4 ~/src/lively4
sed: illegal option -- u
usage: sed script [-Ealn] [-i extension] [file ...]
sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
sed: illegal option -- u
usage: sed script [-Ealn] [-i extension] [file ...]
sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
events.js:160
throw er; // Unhandled 'error' event
^