编译源码出错：
===> No entry for profile default in config.
===> Verifying dependencies...
===> Compiling jwerl
make[2]: Leaving directory `/home/emq2.3.10/deps/jwerl'
make[1]: Leaving directory `/home/emq2.3.10/deps/emq_auth_jwt'
===> Starting relx build process ...
===> Resolving OTP Applications from directories:
/home/emq2.3.10/deps
/usr/local/lib/erlang/lib
/home/emq2.3.10/apps
/home/emq2.3.10/_rel
===> Failed to solve release:
Dependency luerl is specified as a dependency but is not reachable by the system.
make: *** [relx-rel] Error 127 原因是deps/luerl/ebin 下面缺少 luerl.app文件