Xfce Can not start Firefox

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$ firefox
XPCOMGlueLoad error for file /usr/local/lib/firefox/libxul.so:
Shared object "libicui18n.so.64" not found, required by "libxul.so"
Couldn't load XPCOM.

 

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"sudo pkg install nss sqlite" still not fix it

 

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pkg upgrade
about 166 pkgs updated ,then Firefox works again