Facing problem in solve()

hello sir

Help me in resolving this issue

meshio mesh object>
  Number of points: 44182
  Number of cells:
    triangle: 5028
    triangle: 3710
    triangle: 608
    triangle: 3716
    triangle: 608
    triangle: 2974
    triangle: 2974
    triangle: 2974
    triangle: 2974
    triangle: 5024
    tetra: 227276
  Cell sets: gmsh:bounding_entities
  Point data: gmsh:dim_tags
  Cell data: gmsh:physical, gmsh:geometrical
Calling FFC just-in-time (JIT) compiler, this may take some time.
  WARNING: The number of integration points for each cell will be: 125
           Consider using the option 'quadrature_degree' to reduce the number of points
Calling FFC just-in-time (JIT) compiler, this may take some time.
  WARNING: The number of integration points for each cell will be: 125
           Consider using the option 'quadrature_degree' to reduce the number of points

UMFPACK V5.7.9 (Oct 20, 2019): ERROR: out of memory

Traceback (most recent call last):
  File "/home/ayush/flow.py", line 76, in <module>
    solve(F == 0, up, bc, solver_parameters={"newton_solver":{"linear_solver":'mumps'},"newton_solver":{"relative_tolerance":1e-7}})
  File "/usr/lib/petsc/lib/python3/dist-packages/dolfin/fem/solving.py", line 233, in solve
    _solve_varproblem(*args, **kwargs)
  File "/usr/lib/petsc/lib/python3/dist-packages/dolfin/fem/solving.py", line 314, in _solve_varproblem
    solver.solve()
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 successfully call PETSc function 'KSPSolve'.
*** Reason:  PETSc error code is: 76 (Error in external library).
*** Where:   This error was encountered inside ./dolfin/la/PETScKrylovSolver.cpp.
*** Process: 0
*** 
*** DOLFIN version: 2019.2.0.dev0
*** Git changeset:  ubuntu
*** -------------------------------------------------------------------------

Without a reproducible example no one can give you any guidance. Please read Read before posting: How do I get my question answered?

Your problem is not reproducible as you are not using a built in mesh. Please make an example were your code fails on a unit cube or square.