error while importing mesh to FLUENT from ICEM
 

I created mesh in ICEM by using blocking. then MESH is converted in to Unstructured mesh and imported to FLUENT.

During Mesh Check, I found :
left-handed faces detected on zone 20: 65694 right-handed, 84 left-handed.
left-handed faces detected on zone 23: 3574 right-handed, 36 left-handed

Info: Used modified centroid in 52 cell(s) to prevent left-handed faces.
It is recommended that you try to fix the left-handed faces

WARNING: The mesh contains high aspect ratio quadrilateral,
hexahedral, or polyhedral cells.
The default algorithm used to compute the wall
distance required by the turbulence models might
produce wrong results in these cells.
Please inspect the wall distance by displaying the
contours of the 'Cell Wall Distance' at the
boundaries. If you observe any irregularities we
recommend the use of an alternative algorithm to
correct the wall distance.
Please select /solve/initialize/repair-wall-distance
using the text user interface to switch to the
alternative algorithm.


How can I solve it. Why are these warnings coming during Mesh check. Can anyone help me .
Thank in advance