Apache2 on Ubuntu 18.10 all sites respond with ERR_EMPTY_RESPONSE (ping works)
I recently installed several applications on an Ubuntu 18.10 droplet. They work fine for a while, but after a few minutes I start getting errors on all requests to the applications:
This page isn’t working
xxx.com didn’t send any data.
However, if I ping the sites they respond correctly.
If I do a sudo tail /var/log/apache2/error.log I get the following errors all the time:
[Sun Mar 24 23:07:32.431672 2019] [proxy_fcgi:error] [pid 877:tid 139937659733760] (70007)The timeout specified has expired: [client 2605:de00:1:1:4a:4a:0:2:51906] AH01075: Error dispatching request to : (polling)
I tried restarting Apache, rebooting the droplet… but I don’t know what I’m missing, Any ideas?
Thanks in advance