Explo. ManualEvent. Manage case where there is only one event in file.

src/dataprovider/exploprovider.py

@@ -312,7 +312,10 @@ class ManualEventLog(InstrumentLog):
 
         # Convert the XML to dict, then convert the dict to pd.Dataframe
         xml_dict = xmltodict.parse(xml_str)
-        df = pd.DataFrame.from_dict(xml_dict["root"]["event"])
+        if "datetime" in xml_dict["root"]["event"]:  # Only 1 event -> one less level in dict tree
+            df = pd.DataFrame([xml_dict["root"]["event"]])
+        else:
+            df = pd.DataFrame.from_dict(xml_dict["root"]["event"])
 
         # Rename "description" column
         df.rename(columns={"description": 'event'}, inplace=True)