If you happen to stumble on this error on Debian or Ubuntu:

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

Here is the fix: just add the following line to /etc/chromium/default:

EXTRALIB=/usr/lib/xulrunner-24.0:/usr/lib/xulrunner-1.9.1

Source: Eric De Mund on Debian Users mailing list