Added check for logfile existence at top of loop

plugins/logs/service_events

@@ -329,6 +329,13 @@ function fetch() {
             continue
         fi
 
+        # Make sure the logfile exists
+        if [ ! -e "$logfile" ]; then
+            >&2 echo "Logfile '$logfile' doesn't exist. Skipping."
+            n=$((n+1))
+            continue
+        fi
+
         # Find which service this logfile is associated with
         service=
         while read -u 4 -r svc; do