Draw pathlines

[zouki-dev]

I am trying to make figures of CFD simulation (fluid). Mainly I want to draw pathlines. I can't manage to replicate the example from the doc :
https://visualization.fluent.docs.pyansys.com/release/0.7/examples/00-postprocessing/post_processing_exhaust_manifold.html#create-pathlines

Here is the code I am running

import ansys.fluent.core as pyfluent
from ansys.fluent.core import examples

from ansys.fluent.visualization import set_config
from ansys.fluent.visualization.matplotlib import Plots
from ansys.fluent.visualization.pyvista import Graphics


set_config(blocking=True, set_view_on_display="isometric")

import_case = examples.download_file(
    filename="manifold_solution.cas.h5", directory="pyfluent/manifold_solution"
)

import_data = examples.download_file(
    filename="manifold_solution.dat.h5", directory="pyfluent/manifold_solution"
)

solver_session = pyfluent.launch_fluent(
    precision="double", processor_count=2, start_transcript=False, mode="solver"
)

solver_session.tui.file.read_case(import_case)
solver_session.tui.file.read_data(import_data)

graphics = Graphics(session=solver_session)

field_data = solver_session.field_data
field_names = field_data.get_vector_field_data.field_name.allowed_values()
surface_name = field_data.get_vector_field_data.surface_name.allowed_values()
print(field_names)
print(surface_name)

pathlines = graphics.Pathlines["pathlines"]
pathlines.field = "velocity"
pathlines.surfaces_list = ["in1", "in2", "in3"]

pathlines.display("window-9")

No traceback. The error is that the figure doesn't display anything

[mkundu1]

@ajain-work