How to resolve the error "sysctl: cannot stat /proc/sys/net/ipv6/conf/all/forwarding: No such file or directory" while installing the Ansible Automation Platform 2.x ?

Issue

• While installing Ansible Automation Platform, the installer fails with the following error:

  fatal: [controller]: FAILED! => {"changed": false, "msg": "Failed to reload sysctl: net.ipv4.conf.all.accept_source_route = 0\nnet.ipv4.conf.all.log_martians = 1\nnet.ipv4.conf.all.rp_filter = 1\nnet.ipv4.conf.all.secure_redirects = 0\nnet.ipv4.conf.default.accept_source_route = 0\nnet.ipv4.conf.default.log_martians = 1\nnet.ipv4.conf.default.rp_filter = 1\nnet.ipv4.conf.default.secure_redirects = 0\nnet.ipv4.icmp_echo_ignore_broadcasts = 1\nnet.ipv4.icmp_ignore_bogus_error_responses = 1\nnet.ipv4.tcp_syncookies = 1\nnet.ipv4.ip_forward = 0\nkernel.randomize_va_space = 2\nnet.core.somaxconn = 4096\nsysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_ra: No such file or directory\nsysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_source_route: No such file or directory\nsysctl: cannot stat /proc/sys/net/ipv6/conf/all/forwarding: No such file or directory\nsysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_ra: No such file or directory\nsysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_source_route: No such file or directory\n"}