Log decimal conversion issues

Signed-off-by: cwasicki <[email protected]>

Author: cwasicki

src/frequenz/client/electricity_trading/_types.py

@@ -99,11 +99,18 @@ def from_pb(cls, price: price_pb2.Price) -> Self:
 
         Returns:
             Price object corresponding to the protobuf message.
+
+        Raises:
+            Exception: If an error occurs during conversion.
         """
-        return cls(
-            amount=Decimal(price.amount.value),
-            currency=Currency.from_pb(price.currency),
-        )
+        try:
+            return cls(
+                amount=Decimal(price.amount.value),
+                currency=Currency.from_pb(price.currency),
+            )
+        except Exception as e:
+            _logger.error("Error converting price `%s`: %s", price, e)
+            raise e
 
     def to_pb(self) -> price_pb2.Price:
         """Convert a Price object to protobuf Price.
@@ -139,8 +146,15 @@ def from_pb(cls, power: power_pb2.Power) -> Self:
 
         Returns:
             Power object corresponding to the protobuf message.
+
+        Raises:
+            Exception: If an error occurs during conversion.
         """
-        return cls(mw=Decimal(power.mw.value))
+        try:
+            return cls(mw=Decimal(power.mw.value))
+        except Exception as e:
+            _logger.error("Error converting power `%s`: %s", power, e)
+            raise e
 
     def to_pb(self) -> power_pb2.Power:
         """Convert a Power object to protobuf Power.