Invalid $PV_PLUGIN_PATH and -plugin-path= not defined
No supplementary ParaView/OpenFOAM reader modules
Using builtin reader: paraFoam -vtk

( 271.865s) [paraview        ]vtkExprTkFunctionParser:490    ERR| vtkExprTkFunctionParser (0x55a0b09e9010): Err: 0 Type: [Syntax Error] Msg: ERR201 - Undefined symbol: 'rho'	Expression: U_Z*rho*h

( 271.879s) [paraview        ]vtkExprTkFunctionParser:490    ERR| vtkExprTkFunctionParser (0x55a0b09e9010): Err: 0 Type: [Syntax Error] Msg: ERR201 - Undefined symbol: 'rho'	Expression: U_Z*rho*h

( 271.880s) [paraview        ] vtkArrayCalculator.cxx:591   WARN| vtkPVArrayCalculator (0x55a0bbd4ff10): An error occurred when parsing the calculator's function.  See previous errors.
( 345.352s) [paraview        ]vtkExprTkFunctionParser:490    ERR| vtkExprTkFunctionParser (0x55a0b2d3ba70): Err: 0 Type: [Syntax Error] Msg: ERR201 - Undefined symbol: 'U_Z'	Expression: U_Z*rho*h

( 345.354s) [paraview        ]vtkExprTkFunctionParser:490    ERR| vtkExprTkFunctionParser (0x55a0b2d3ba70): Err: 0 Type: [Syntax Error] Msg: ERR201 - Undefined symbol: 'U_Z'	Expression: U_Z*rho*h

( 345.354s) [paraview        ] vtkArrayCalculator.cxx:591   WARN| vtkPVArrayCalculator (0x55a0bbd4ff10): An error occurred when parsing the calculator's function.  See previous errors.

[1]+  Done                    paraFoam
openfoam2312:~/OpenFOAM/mark-v2312/1.1_Downcomer_fine/
mark$ paraFoam &
[1] 3573230
openfoam2312:~/OpenFOAM/mark-v2312/1.1_Downcomer_fine/
mark$ Invalid $PV_PLUGIN_PATH and -plugin-path= not defined
No supplementary ParaView/OpenFOAM reader modules
Using builtin reader: paraFoam -vtk