chromium error: Error initializing NSS without a persistent database: NSS error code: -8023

[Yuwen Dai <yuwend@gmail.com>]

Dear all,

I'm using Wheezy and chromium.  Chromium has been worked well until today. When I run

chromium

from the shell,  i saw this message:

[31:31:1029/204029:ERROR:nss_util.cc(211)] Error initializing NSS without a persistent database: NSS error code: -8023

and chromium cann't open any page.  The version of chromium is:
 chromium --version
Chromium 37.0.2062.120 Built on Debian 7.6, running on Debian 7.11

I also searched internet,  some people suggested

ln -s /usr/lib/x86_64-linux-gnu/nss/ /usr/lib/nss

I tried, it didn't work.   Any suggestion?  Thanks in advance.

Yuwen