The reason this message occurs, is because I have a link in the spread sheet to a website with specific information. When I try to download that info, I get the above message. I use copy and paste to get the figures and that caused the slowdown an graying as described in 670676, there appears to be some other info that I do not see.
Here is the proof that the above file exists:
ea@Discovery:~$ cd /tmp
ea@Discovery:/tmp$ ls -l
total 24
-rw------- 1 ea ea 0 Jul 1 14:17 config-err-sL7P3f
drwx------ 2 ea ea 4096 Jul 1 14:28 mozilla_ea0
drwx------ 3 root ea 4096 Jul 1 14:18 snap.1000_libreoffice_GjVWUW
drwx------ 3 root root 4096 Jul 1 14:17 systemd-private-cc753a2ff8c541299d0aa2d562d0f421-colord.service-mTjqGd
drwx------ 3 root root 4096 Jul 1 14:17 systemd-private-cc753a2ff8c541299d0aa2d562d0f421-rtkit-daemon.service-xBCmY4
drwx------ 3 root root 4096 Jul 1 14:17 systemd-private-cc753a2ff8c541299d0aa2d562d0f421-systemd-timesyncd.service-e1xqTZ
drwx------ 2 ea ea 4096 Jul 1 14:28 Temp-23fe5736-60f3-475a-a968-055933bc2c06
-rw-rw-r-- 1 ea ea 0 Jul 1 14:17 unity_support_test.0
ea@Discovery:/tmp$ cd mozilla_ea0
ea@Discovery:/tmp/mozilla_ea0$ ls -l
total 8
-r-------- 1 ea ea 5116 Jul 1 14:28 getPortfolioDownload.csv
ea@Discovery:/tmp/mozilla_ea0$
How to make LO see that file when needed?