Mitmproxy problem with HTTPS

I have setup mitmproxy properly.
I use arpspoof attack correctly on my nettwork so as to perform MITM attack. the “arp -a” shows that arpsoof works appropriately.
I use the following command before starting mitmproxy process.

sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 80 -j REDIRECT --to-port 8080
iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 443 -j REDIRECT --to-port 8080

Then, i install certificate on my device which is android and name it “mitmproxy-ca-cert”, and it sounds it is installed in correct way.

Then i start mitmproxy using:

mitmproxy --mode transparent --showhost

The mitmproxy works great on HTTP request, but any request with HTTPS, the page could not be load on victim browser and nothing shown in mitmproxy terminal.

Any suggestion to resolve that? is there any command i may add to solve this problem.

Note: Attacker Os: Kali Linux 2019
Victim Os: Android 8