freeradius | shared secret is incorrect | unprintable characters in the password

[Alan DeKok]

Shi Xiaoyan wrote:
> 
>     * First, I known this question had been asked many times, and I had
>       read many posts about it, and reenter the shared secret many
>       times, but still could not resolve my problem, I had been blocked
>       on this nearly a week, so I need your help, thanks in advance

  Please post plain text.  There's no reason to add bullet points before
every line.

  Please DO NOT post the "users" file.  The documentation doesn't ask
for it, and we don't need it.

  Please post "radiusd -X".  Adding more "-x" is not needed.

  Alan DeKok.