After fire following command i got this error
#$: bench update
Traceback (most recent call last):
File “/usr/bin/bench”, line 9, in
load_entry_point(‘bench==0.92’, ‘console_scripts’, ‘bench’)()
File “/home/erpnext4/bench-repo/bench/cli.py”, line 60, in cli
bench()
File “/usr/lib64/python2.7/site-packages/click/core.py”, line 700, in call
return self.main(*args, **kwargs)
File “/usr/lib64/python2.7/site-packages/click/core.py”, line 680, in main
rv = self.invoke(ctx)
File “/usr/lib64/python2.7/site-packages/click/core.py”, line 1027, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/usr/lib64/python2.7/site-packages/click/core.py”, line 873, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/usr/lib64/python2.7/site-packages/click/core.py”, line 508, in invoke
return callback(*args, **kwargs)
File “/home/erpnext4/bench-repo/bench/cli.py”, line 210, in _update
version_upgrade = is_version_upgrade()
File “/home/erpnext4/bench-repo/bench/app.py”, line 92, in is_version_upgrade
upstream_version = get_upstream_version(‘frappe’, bench=bench, branch=branch)
File “/home/erpnext4/bench-repo/bench/app.py”, line 127, in get_upstream_version
branch = get_current_branch(app)
File “/home/erpnext4/bench-repo/bench/app.py”, line 113, in get_current_branch
return get_cmd_output(“basename $(git symbolic-ref -q HEAD)”, cwd=repo_dir)
File “/home/erpnext4/bench-repo/bench/utils.py”, line 294, in get_cmd_output
return subprocess.check_output(cmd, cwd=cwd, shell=True, stderr=open(os.devnull, ‘wb’)).strip()
File “/usr/lib64/python2.7/subprocess.py”, line 575, in check_output
raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command ‘basename $(git symbolic-ref -q HEAD)’ returned non-zero exit status 1