make
提示 undefined function rebar3:main/1，那位大神帮解决一下，在线等。谢谢
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===< 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？