Merge branch 'fix_py3_compatibility' into 'master'

Fix usage of format strings

See merge request !24

src/AsapoWorker/streamer.py

@@ -289,7 +289,7 @@ class Streamer:
                 else:
                     self._reset_delay_on_error()
         except Exception as e:
-            log.error(f"Streamer fails with error : {e}", exc_info=True)
+            log.error("Streamer fails with error: %s", e, exc_info=True)
             raise
         finally:
             self._shutdown()