socket_sendto( /var/run/zm/zms-830140s.sock ) failed: No such file or directory
getStreamCmdResponse stream error: socket_sendto( /var/run/zm/zms-147782s.sock ) failed: No such file or directory - checkStreamForErrors()
I had difficulty with this too. Not sure if my solution exactly matches your problem, but this worked for me. I am using version 1.32.3 on Ubuntu 1804.1 LTS. I found that, that within the ZoneMinder console, if I set Options>System>Auth_Relay to "None," or unchecked OPT_USE_AUTH, I could see streaming video. The problem turned out to be a mismatch of time zones, causing the authentication to throw an error. When installing ZoneMinder, I configured the time zone per the instructions. This however did not match the computer time. I simply executed the following line from terminal to set the computer time to the same time zone as configured in ZoneMinder, and the problem immediately resolved. Additionally this made the time stamps the correct local time.
cp /usr/share/zoneinfo/America/Chicago /etc/localtime
[Substitute your timezone for Chicago. Note the space before /etc.]