escript: exception error: undefined function rebar3:main/1

[saswatinayak]

Hi , i am facing with this issue while building lorawan-server .

can anyone help .
Here is the error log as below

---

ERROR: lorawan-server-0.6.7-r0 do_compile: oe_runmake failed
ERROR: lorawan-server-0.6.7-r0 do_compile: Function failed: do_compile (log file is located at ..../yocto/build/tmp/work/cortexa7hf-neon-vfpv4-phytec-linux-gnueabi/lorawan-server/0.6.7-r0/temp/log.do_compile.7345)
ERROR: Logfile of failure stored in:.........yocto/build/tmp/work/cortexa7hf-neon-vfpv4-phytec-linux-gnueabi/lorawan-server/0.6.7-r0/temp/log.do_compile.7345
Log data follows:
| DEBUG: Executing shell function do_compile
| NOTE: make -j 4 release
| escript: exception error: undefined function rebar3:main/1
| in function escript:run/2 (escript.erl, line 758)
| in call from escript:start/1 (escript.erl, line 277)
| in call from init:start_em/1
| in call from init:do_boot/3
| Makefile:35: recipe for target 'release' failed
| make: *** [release] Error 127
| ERROR: oe_runmake failed
| WARNING: .../yocto/build/tmp/work/cortexa7hf-neon-vfpv4-phytec-linux-gnueabi/lorawan-server/0.6.7-r0/temp/run.do_compile.7345:1 exit 1 from 'exit 1'
| ERROR: Function failed: do_compile (log file is located at ........./yocto/build/tmp/work/cortexa7hf-neon-vfpv4-phytec-linux-gnueabi/lorawan-server/0.6.7-r0/temp/log.do_compile.7345)
ERROR: Task ..../sources/poky/../meta-lorawan/recipes-core/lorawan-server/lorawan-server_0.6.7.bb:do_compile) failed with exit code '1'
NOTE: Tasks Summary: Attempted 752 tasks of which 751 didn't need to be rerun and 1 failed.
NOTE: Writing buildhistory

Summary: 1 task failed:
yocto/sources/poky/../meta-lorawan/recipes-core/lorawan-server/lorawan-server_0.6.7.bb:do_compile
Summary: There were 2 WARNING messages shown.
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.