tyr to use repr to get the error message

slapos/slap/slap.py

@@ -172,7 +172,7 @@ class SoftwareRelease(SlapDocument):
       # Does not follow interface
       logger.info('Boxiang debug: url: %s', self.getURI())
       logger.info('Boxiang debug: computer_id: %s', self.getComputerId())
-      logger.info('Boxiang debug: error_log: %s', error_log.encode('utf-8'))
+      logger.info('Boxiang debug: error_log: %s', repr(error_log))
       a = str(error_log)
       self._connection_helper.POST('softwareReleaseError', data={
         'url': self.getURI(),