I have upgraded my raspiblitz v 1.7.2 directly to v 1.10. After restart and "upgrade" it shows "sparco-host=0.0.0.0: unknown option" in logs

External question — Bitcoin Stack Exchange Author: Victor Pakhomov Original post: https://bitcoin.stackexchange.com/questions/121146 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I was lazy and have upgraded my raspiblitz v 1.7.2 directly to v 1.10 instead of going through 1.8, 1.9. After restart and selecting "upgrade" it continuously shows "Lightning : prepare resync" in console menu and "sparco-host=0.0.0.0: unknown option" in logs. lightning: Config file /home/bitcoin/.lightning/config line 15: sparco-host=0.0.0.0: unknown option When I inspecting the lightningd.service status, it failed to start and restart continuously. It also shows, that it cannot find module gunicorn. What can I do to fix that issue? Best regards

External answer — Bitcoin Stack Exchange Author: Victor Pakhomov Original post: https://bitcoin.stackexchange.com/a/121147 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. After doing some research and trying to install gunicorn in lightningd virtual environment and some other trials i just examined the /home/bitcoin/.lightning/config file, stopped lightningd.service , commented out the lines starting with "sparco" and started the lightningd.service again. It doesn't show the error regarding this property anymore, starts checking the DB, found and fixed a couple of problems and now it runs fine. I guess this properties are from older versions and perhaps are not used in the newer core-lightning anymore. If anybody know, if lightning needs these sparco-* please leave the comment below.