workaround for stalling worker processes when running the daemon

src/Core/Worker.php

@@ -597,7 +597,7 @@ class Worker
 						['id' => $entry["id"]]
 					);
 				} else {
-					logger("Worker process ".$entry["pid"]." (".implode(" ", $argv).") now runs for ".round($duration)." of ".$max_duration." allowed minutes. That's okay.", LOGGER_DEBUG);
+					logger("Worker process ".$entry["pid"]." (".substr(json_encode($argv), 0, 50).") now runs for ".round($duration)." of ".$max_duration." allowed minutes. That's okay.", LOGGER_DEBUG);
 				}
 			}
 		}