Set-default-site Error: frappe app is not installed

I use the command bench set-default-site to change the default site.
But it have issue:
$bench set-default-site
frappe app is not installed. Run the following command to install frappe
bench get-app frappe GitHub - frappe/frappe: Low code web framework for real world applications, in Python and Javascript
/bin/sh: 1: /home/frappe/frappe-bench/env/bin/frappe: not found
Traceback (most recent call last):
File “/usr/local/bin/bench”, line 9, in
load_entry_point(‘bench==0.0.0’, ‘console_scripts’, ‘bench’)()
File “/home/frappe/bench-repo/bench/”, line 60, in cli
File “/usr/local/lib/python2.7/dist-packages/click/”, line 716, in call
return self.main(*args, **kwargs)
File “/usr/local/lib/python2.7/dist-packages/click/”, line 696, in main
rv = self.invoke(ctx)
File “/usr/local/lib/python2.7/dist-packages/click/”, line 1060, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/usr/local/lib/python2.7/dist-packages/click/”, line 889, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/usr/local/lib/python2.7/dist-packages/click/”, line 534, in invoke
return callback(*args, **kwargs)
File “/home/frappe/bench-repo/bench/”, line 388, in set_default_site
File “/home/frappe/bench-repo/bench/”, line 349, in set_default_site
cwd=os.path.join(bench, ‘sites’))
File “/home/frappe/bench-repo/bench/”, line 105, in exec_cmd
raise CommandFailedError(cmd)
bench.utils.CommandFailedError: /home/frappe/frappe-bench/env/bin/frappe --use

@iHello did you create the site?

I use bench new-site to create the site.
this command bench set-default-sitedon’t work. so i edit the currentsite.txt manually.

@rmehta I am seeing this exact behavior as well. What additional information would you like?