It is possible that the
RequestReadTimeout directive from Apache is not properly set. Can you try the following to see if the issue gets solved?
1) Edit the
/opt/bitnami/apache2/conf/httpd.conf and make sure that the following line is not commented:
You can just execute this command to do so:
sudo sed -i -e '/httpd-default.conf/ s/^# *//' /opt/bitnami/apache2/conf/httpd.conf
2) Restart the services
sudo /opt/bitnami/ctlscript.sh restart
3) Try again
Does it help to solve the issue?