麒麟系统部署EMQX遇到坑

make
提示 undefined function rebar3:main/1,那位大神帮解决一下,在线等。谢谢
100 979k 100 979k 0 0 6571 0 0:02:32 0:02:32 --:–:-- 3788
===< building artifact=rel for profile=emqx
Downloading i18n translation from emqx/emqx-i18n…
Downloaded i18n translation in 21840 milliseconds.
Set DOWNLOAD_I18N_TRANSLATIONS=false to skip
escript: exception error: undefined function rebar3:main/1
in function escript:run/2 (escript.erl, line 750)
in call from escript:start/1 (escript.erl, line 277)
in call from init:start_em/1
in call from init:do_boot/3
make: *** [Makefile:176:emqx] 错误 127

你下错了 rebar3?