Update patch failed after upgrade to v8

Hello,

I get an error when using “bench update --upgrade” command, but I am successful updating my bench to v8 using “bench switch-to-master --upgrade” command. After that I tried to run “bench update --patch” to be safe from any differences in database schema but I got errors like this.
Any help? Thank you.

user@host erp-bench]$ sudo bench update --patch Backing up sites... Patching sites... Migrating site.1 Updating DocTypes for frappe : [========================================] Updating DocTypes for erpnext : [========================================] Syncing help database... Migrating site.2 Updating DocTypes for frappe : [========================================] Updating DocTypes for erpnext : [========================================] Syncing help database... Traceback (most recent call last): File "/usr/bin/bench", line 11, in <module> load_entry_point('bench', 'console_scripts', 'bench')() File "/home/user/bench-repo/bench/cli.py", line 40, in cli bench_command() File "/usr/lib64/python2.7/site-packages/click/core.py", line 722, in __call__ return self.main(*args, **kwargs) File "/usr/lib64/python2.7/site-packages/click/core.py", line 697, in main rv = self.invoke(ctx) File "/usr/lib64/python2.7/site-packages/click/core.py", line 1066, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/usr/lib64/python2.7/site-packages/click/core.py", line 895, in invoke return ctx.invoke(self.callback, **ctx.params) File "/usr/lib64/python2.7/site-packages/click/core.py", line 535, in invoke return callback(*args, **kwargs) File "/home/user/bench-repo/bench/commands/update.py", line 62, in update _update(pull, patch, build, bench, auto, restart_supervisor, requirements, no_backup, upgrade, force=force, reset=reset) File "/home/user/bench-repo/bench/commands/update.py", line 103, in _update restart_supervisor_processes(bench_path=bench_path) File "/home/user/bench-repo/bench/utils.py", line 344, in restart_supervisor_processes supervisor_status = subprocess.check_output(['sudo', 'supervisorctl', 'status'], cwd=bench_path) File "/usr/lib64/python2.7/subprocess.py", line 219, in check_output raise CalledProcessError(retcode, cmd, output=output) subprocess.CalledProcessError: Command '['sudo', 'supervisorctl', 'status']' returned non-zero exit status 2