All site down, after upgrade

I have update ee with “ee cli update”
apparently the version 4.1.4 was installed smoothly even if “ee cli version” still say EE 4.1.3.

Anyway, when I try to enable one of the sites, I get the following log:

[01-09-2020 15:11:52] ee.INFO: ::::::::::::::::::::::::ee invoked::::::::::::::::::::::::
[01-09-2020 15:11:52] ee.DEBUG: -----------------------
[01-09-2020 15:11:52] ee.DEBUG: COMMAND: cd /opt/easyengine/services && docker ps -q --no-trunc | grep $(docker-compose ps -q global-nginx-proxy)
[01-09-2020 15:11:53] ee.DEBUG: STDOUT: 9eba1d3a713fed145a16e3143e754ff49f9e4ebde504a5912e3916285d2830d1
[01-09-2020 15:11:53] ee.DEBUG: RETURN CODE: 0
[01-09-2020 15:11:53] ee.DEBUG: -----------------------
[01-09-2020 15:11:53] ee.DEBUG: -----------------------
[01-09-2020 15:11:53] ee.DEBUG: COMMAND: docker ps > /dev/null
[01-09-2020 15:11:54] ee.DEBUG: RETURN CODE: 0
[01-09-2020 15:11:54] ee.DEBUG: -----------------------
[01-09-2020 15:11:54] ee.DEBUG: -----------------------
[01-09-2020 15:11:54] ee.DEBUG: COMMAND: command -v docker-compose > /dev/null
[01-09-2020 15:11:54] ee.DEBUG: RETURN CODE: 0
[01-09-2020 15:11:54] ee.DEBUG: -----------------------
[01-09-2020 15:11:54] ee.DEBUG: Using default global config: /opt/easyengine/config/config.yml
[01-09-2020 15:11:54] ee.DEBUG: No project config found
[01-09-2020 15:11:54] ee.DEBUG: argv: /usr/local/bin/ee site enable XXX DOT COM
[01-09-2020 15:11:54] ee.DEBUG: Running command: site
[01-09-2020 15:11:54] ee.DEBUG: Running command: site enable
[01-09-2020 15:11:54] ee.INFO: ======================== site enable start ========================
[01-09-2020 15:11:54] ee.INFO: Enabling site XXX DOT com.
[01-09-2020 15:11:54] ee.DEBUG: -----------------------
Starting XXXXXXcom_php_1 … error ERROR: for homestagingluganocom_php_1 Cannot start service php: OCI runtime create failed: container_linux.go:349: starting container process caused “process_linux.go:449: container init caused “write sysctl key net.ipv4.tcp_keepalive_time: open /proc/sys/net/ipv4/tcp_keepalive_time: no such file or directory””: unknown ERROR: for php Cannot start service php: OCI runtime create failed: container_linux.go:349: starting container process caused “process_linux.go:449: container init caused “write sysctl key net.ipv4.tcp_keepalive_time: open /proc/sys/net/ipv4/tcp_keepalive_time: no such file or directory””: unknown Encountered errors while bringing up the project.
[01-09-2020 15:11:58] ee.DEBUG: RETURN CODE: 1
[01-09-2020 15:11:58] ee.DEBUG: -----------------------
[01-09-2020 15:11:58] ee.ERROR: There was error in enabling XXXX DOT COM. Please check logs.

I’m on Lightsail AWS - Ubuntu 16.04.7 LTS

Can anybody please help?

Thanks,
Richard.