Error in using venv/bin/zconsole

While i was exploring the training documentations and trying out the exercises while running the command venv/bin/zconsole debug instance/etc/zope.conf

I encountered an error stating : -
Traceback (most recent call last):
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/zc/lockfile/init.py", line 59, in _lock_file
fcntl.flock(file.fileno(), _flags)
BlockingIOError: [Errno 11] Resource temporarily unavailable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/utilities/zconsole.py", line 26, in debug
make_wsgi_app({}, zopeconf)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/run.py", line 61, in make_wsgi_app
starter.prepare()
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/starter.py", line 38, in prepare
self.startZope()
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/starter.py", line 94, in startZope
Zope2.startup_wsgi()
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/init.py", line 36, in startup_wsgi
_startup()
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/App/startup.py", line 100, in startup
DB = dbtab.getDatabase('/', is_root=1)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/datatypes.py", line 245, in getDatabase
db = factory.open(name, self.databases)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/datatypes.py", line 141, in open
DB = self.createDB(database_name, databases)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/Zope2/Startup/datatypes.py", line 138, in createDB
return ZODBDatabase.open(self, databases)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/ZODB/config.py", line 146, in open
storage = section.storage.open()
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/ZODB/config.py", line 225, in open
return FileStorage(config.path, **options)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/ZODB/FileStorage/FileStorage.py", line 254, in init
self._lock_file = LockFile(file_name + '.lock')
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/zc/lockfile/init.py", line 117, in init
super(LockFile, self).init(path)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/zc/lockfile/init.py", line 90, in init
_lock_file(fp)
File "/home/priyanshu/Desktop/Web/gsoc/training/backend/venv/lib/python3.10/site-packages/zc/lockfile/init.py", line 61, in _lock_file
raise LockError("Couldn't lock %r" % file.name)
zc.lockfile.LockError: Couldn't lock '/home/priyanshu/Desktop/Web/gsoc/training/backend/instance/var/filestorage/Data.fs.lock'

This is expected if you already have another process running that has opened the same database file. To avoid it, you need to stop the other process first, or use one of the database configurations that supports multiple clients (ZEO or Relstorage)

Okey thanks