fix: ping function uses debug for log (#391)

Author: michaelahojna

CHANGELOG.md

@@ -5,6 +5,7 @@
 1. [#378](https://github.com/influxdata/influxdb-client-python/pull/378): Correct serialization DataFrame with nan values [DataFrame]
 1. [#384](https://github.com/influxdata/influxdb-client-python/pull/384): Timeout can be specified as a `float`
 1. [#380](https://github.com/influxdata/influxdb-client-python/pull/380): Correct data types for querying [DataFrame]
+1. [#391](https://github.com/influxdata/influxdb-client-python/pull/391): Ping function uses debug for log 
 
 ### CI
 1. [#370](https://github.com/influxdata/influxdb-client-python/pull/370): Add Python 3.10 to CI builds

influxdb_client/client/influxdb_client.py

@@ -429,7 +429,7 @@ def ping(self) -> bool:
             ping_service.get_ping()
             return True
         except Exception as ex:
-            logger.error("Unexpected error during /ping: %s", ex)
+            logger.debug("Unexpected error during /ping: %s", ex)
             return False
 
     def version(self) -> str: