模块质量不平衡

迎难而上-.-

错误报告说的是质量不守恒，完全没有思路，请教一下大家，我应该怎么解决。V11版本
  **  ERROR
      BLOCK R-0102 IS NOT IN MASS BALANCE:
      MASS INLET FLOW = 0.35865261E+01, MASS OUTLET FLOW = 0.35742572E+01
      RELATIVE DIFFERENCE = 0.34325494E-02
      MAY BE DUE TO A TEAR STREAM OR A STREAM FLOW MAY HAVE BEEN
      CHANGED BY A CALCULATOR, TRANSFER, BALANCE, OR CONVERGENCE BLOCK
      AFTER THE BLOCK HAD BEEN EXECUTED.


  **  ERROR
      BLOCK B31 IS NOT IN MASS BALANCE:
      MASS INLET FLOW = 0.44886700E+00, MASS OUTLET FLOW = 0.45970236E+00
      RELATIVE DIFFERENCE = 0.24139373E-01
      MAY BE DUE TO A TEAR STREAM OR A STREAM FLOW MAY HAVE BEEN
      CHANGED BY A CALCULATOR, TRANSFER, BALANCE, OR CONVERGENCE BLOCK
      AFTER THE BLOCK HAD BEEN EXECUTED.

  **  ERROR
      Convergence block $OLVER02 did not converge
      normally in the final pass