我正在使用fencis并使用fenics版本2017.1.0执行我的python脚本，使用求解器时出现以下错误：
solve(F == 0, K, solver_parameters = {'newton_solver': {'convergence_criterion': 'incremental'}})
错误：
File "/home/divyat/anaconda/lib/python3.6/site-packages/dolfin/fem/solving.py", line 300, in solve
_solve_varproblem(*args, **kwargs)
File "/home/divyat/anaconda/lib/python3.6/site-packages/dolfin/fem/solving.py", line 349, 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: 92 (See http://www.mcs.anl.gov/petsc/documentation/linearsolvertable.html for possible LU and Cholesky solvers).
*** Where: This error was encountered inside /feedstock_root/build_artefacts/fenics_1505643966928/work/dolfin-2017.1.0/dolfin/la/PETScKrylovSolver.cpp.
*** Process: 0
***
*** DOLFIN version: 2017.1.0
*** Git changeset: 368b07a8b3c7fa8acb10fa50a1ae933af9767081
*** -------------------------------------------------------------------------