# Buggy code
def run(self):
    """Handle the connection with the server."""
    # Set up the zmq port.
    self.socket = self.context.socket(zmq.PAIR)
    self.port = self.socket.bind_to_random_port("tcp://*")

    # Set up the process.
    self.process = QProcess(self)
    if self.cwd:
        self.process.setWorkingDirectory(self.cwd)
    p_args = ["-u", self.target, str(self.port)]
    if self.extra_args is not None:
        p_args += self.extra_args

    # Set up environment variables.
    processEnvironment = QProcessEnvironment()
    env = self.process.systemEnvironment()
    if (self.env and "PYTHONPATH" not in self.env) or self.env is None:
        python_path = osp.dirname(get_module_path("spyder"))
        # Add the libs to the python path.
        for lib in self.libs:
            try:
                path = osp.dirname(imp.find_module(lib)[1])
                python_path = osp.pathsep.join([python_path, path])
            except ImportError:
                pass
        env.append("PYTHONPATH=%s" % python_path)
    if self.env:
        env.update(self.env)
    for envItem in env:
        envName, separator, envValue = envItem.partition("=")
        processEnvironment.insert(envName, envValue)
    self.process.setProcessEnvironment(processEnvironment)

    # Start the process and wait for started.
    self.process.start(self.executable, p_args)
    self.process.finished.connect(self._on_finished)
    running = self.process.waitForStarted()
    if not running:
        raise IOError("Could not start %s" % self)

    # Set up the socket notifer.
    fid = self.socket.getsockopt(zmq.FD)
    self.notifier = QSocketNotifier(fid, QSocketNotifier.Read, self)
    self.notifier.activated.connect(self._on_msg_received)


# Traceback (OSError)
File "/Users/jimmyxiao/anaconda3/lib/python3.7/site-packages/spyder/utils/introspection/plugin_client.py", line 158, in _on_finished
self.run()
File "/Users/jimmyxiao/anaconda3/lib/python3.7/site-packages/spyder/utils/introspection/plugin_client.py", line 104, in run
raise IOError('Could not start %s' % self)
OSError: Could not start <spyder.utils.introspection.plugin_client.PluginClient object at 0xb5fc7c5e8>
WARNING:spyder.widgets.github.backend:Failed to send bug report on Github. response={'code': 502, 'json': {'message': 'Server Error'}}

# Fixed code
def run(self):
    """Handle the connection with the server."""
    # Set up the zmq port.
    self.socket = self.context.socket(zmq.PAIR)
    self.port = self.socket.bind_to_random_port("tcp://*")

    # Set up the process.
    self.process = QProcess(self)
    if self.cwd:
        self.process.setWorkingDirectory(self.cwd)
    p_args = ["-u", self.target, str(self.port)]
    if self.extra_args is not None:
        p_args += self.extra_args

    # Set up environment variables.
    processEnvironment = QProcessEnvironment()
    env = self.process.systemEnvironment()
    if (self.env and "PYTHONPATH" not in self.env) or self.env is None:
        python_path = osp.dirname(get_module_path("spyder"))
        # Add the libs to the python path.
        for lib in self.libs:
            try:
                path = osp.dirname(imp.find_module(lib)[1])
                python_path = osp.pathsep.join([python_path, path])
            except ImportError:
                pass
        env.append("PYTHONPATH=%s" % python_path)
    if self.env:
        env.update(self.env)
    for envItem in env:
        envName, separator, envValue = envItem.partition("=")
        processEnvironment.insert(envName, envValue)
    self.process.setProcessEnvironment(processEnvironment)

    # Start the process and wait for started.
    self.process.start(self.executable, p_args)
    self.process.finished.connect(self._on_finished)
    running = self.process.waitForStarted()
    if not running:
        # Don't raise an error if the plugin fails to start
        # Fixes issue 8934
        debug_print("Could not start %s" % self)
        return

    # Set up the socket notifer.
    fid = self.socket.getsockopt(zmq.FD)
    self.notifier = QSocketNotifier(fid, QSocketNotifier.Read, self)
    self.notifier.activated.connect(self._on_msg_received)