Which ones? Check /var/log/apt/history.log, /var/log/apt/term.log, and/or /var/log/dpkg.log
Is the network on that machine working otherwise? Are the two interfaces up? Can telnet connect to 127.0.0.1:5350 and 192.168.50.107:5350 ?
(Not sure if these messages are necessarily critical. “Warn” level in logs is commonly not fatal in most software, and the entries occurred in logs here where they didn’t seem to be causing an issue: Nucleus Plus missing Codecs)