Hi,

I just restarted thunderbird, after a security update to 
thunderbird-68.2.0-2.el6_10.i686, and it failed to start.

[caussyn@dhcp111216 ~]$ thunderbird
XPCOMGlueLoad error for file /usr/lib/thunderbird/libxul.so:
libldap60.so: cannot open shared object file: No such file or directory
Couldn't load XPCOM.

I found to fix this, I had to give the shared library path:

export LD_LIBRARY_PATH=/usr/lib/thunderbird

Then it starts..

Maybe this will be helpful for someone else to use it, or to  fix the 
package.

Thanks,

Dave Caussyn