Error occurred while using MEShX for conversion

[RokyC]

My package vesion as follows:
DOLFIN version: 2019.2.0.dev0
meshio version: 5.3.4
gmsh version: 4.10.1
The following error occurred while using MEShX for conversion :

String tag Num Tag Dim

---

Top 3 1
Right 4 1
Left 5 1
Bottom 6 1
Domain 1 2
Obstacle 2 2
Creating gmsh:physical mesh
There was some error 😱
Traceback (most recent call last):
File "/usr/local/bin/meshx", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/meshx/_cli.py", line 13, in main
write(args)
File "/usr/local/lib/python3.8/dist-packages/meshx/_helpers.py", line 13, in write
converter.write_sub_domains()
File "/usr/local/lib/python3.8/dist-packages/meshx/_helpers.py", line 86, in write_sub_domains
infile.read(mesh)
RuntimeError:

*** -------------------------------------------------------------------------
*** DOLFIN encountered an error. If you are not able to resolve this issue
*** using the information listed below, you can ask for help at

---

*** fenics-support@googlegroups.com

---

*** Remember to include the error message listed below and, if possible,
*** include a minimal running example to reproduce the error.

---

*** -------------------------------------------------------------------------
*** Error: Unable to open XDMF file.
*** Reason: XDMF file "mesh/line.xdmf" does not exist.
*** Where: This error was encountered inside XDMFFile.cpp.
*** Process: 0

---

*** DOLFIN version: 2019.2.0.dev0
*** Git changeset: unknown

Self.msh.cell_data.keys () reads GMSH :physical leads to identifying impossibly.