Using PySpice with ngspice

[stan3c]

I am unable to install libngspice.so on my LinuxMX due to some dependency problems. I installed libngspice0, but that does not work with pyspice. libngspice0-dev rises some dependency errors.
But I have installed ngspice on my system from sources and it works as expected.
So I would want to use the ngspice I compiled with pyspice but I am unable to get it to work.
I want to read external netlist and simulate it in ngspice. I have the following python script, netslist, .spiceinit in one folder:

import PySpice
from PySpice.Unit import *
from PySpice.Spice.Netlist import Circuit
from PySpice.Spice.Parser import SpiceParser
from PySpice.Spice import Simulation
Simulation.CircuitSimulator.DEFAULT_SIMULATOR = 'ngspice-subprocess'

# Load the netlist from a file
file_path = 'filtlc.cir'  # replace with your file path
parser = SpiceParser(path=file_path)

# Create a circuit from the netlist
circuit = parser.build_circuit()

# Create a simulator for the circuit
simulator = circuit.simulator(temperature=25, nominal_temperature=25)

# Run the simulation
analysis = simulator.ac(start_frequency=1@u_Hz, stop_frequency=1@u_MHz, number_of_points=10,  variation='dec')

# Now you can access the simulation results in the 'analysis' object

.title Low Pass RC Filter
Vinput vin 0 DC 0V AC 1 SIN(0V 10V 1kHz)
R1 vin vout 1k
C1 vout 0 1u
.ac dec 1 1 10k
.save v(vin) v(vout)
*.control
*run
*.endc
.end

set ngbehavior=mc

I get an error:

analysis = simulator.ac(start_frequency=1@u_Hz, stop_frequency=1@u_MHz, number_of_points=10,  variation='dec')
Traceback (most recent call last):

  Cell In [2], line 19
    analysis = simulator.ac(start_frequency=1@u_Hz, stop_frequency=1@u_MHz, number_of_points=10,  variation='dec')

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/Simulation.py:1209 in ac
    return self._run('ac', *args, **kwargs)

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/NgSpice/Simulation.py:76 in _run
    raw_file = self._spice_server(spice_input=str(self))

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/NgSpice/Server.py:162 in __call__
    return RawFile(stdout, number_of_points)

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/NgSpice/RawFile.py:170 in __init__
    raw_data = self._read_header(stdout)

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/NgSpice/RawFile.py:192 in _read_header
    self.circuit_name = self._read_header_field_line(header_line_iterator, 'Circuit')

  File /usr/local/lib/python3.11/dist-packages/PySpice/Spice/RawFile.py:243 in _read_header_field_line
    raise NameError("Expected label %s instead of %s" % (expected_label, label))

NameError: Expected label Circuit instead of Note