Deadline error with redshift and c4d

hello, we recently change the PC that manage our render farm with deadline monitor… re install the deadline monitor and saw that is not working anymore… we use it with redshift proxies version 3.0.28 and submit as redshift files. repeat: we only change the PC and re install the monitor, nothing change in our render farm… the error code is as attached… anyone could help please ?
thanks in advance…
best
w