fix

Author: HydrogenSulfate

ppsci/solver/solver.py

@@ -249,9 +249,8 @@ def __init__(
             if version.Version(paddle.__version__) != version.Version("0.0.0")
             else f"develop({paddle.version.commit[:7]})"
         )
-        if logger._logger is None:
-            logger.init_logger("ppsci")
-        logger.info(f"Using paddlepaddle {paddle_version} on device {self.device}")
+        if logger._logger is not None:
+            logger.info(f"Using paddlepaddle {paddle_version} on device {self.device}")
 
     @staticmethod
     def from_config(cfg: Dict[str, Any]) -> Solver: