fix: fix crash in activitity page (casibase#1423)

Author: Working On It

object/activity.go

@@ -94,7 +94,7 @@ func GetActivities(days int, user string, fieldName string) ([]*Activity, error)
 		}
 		value, err := getTargetfieldValue(record, fieldName)
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("failed to parse record: name %s, field %s, error: %v", record.Name, fieldName, err)
 		}
 		activities[dayIndex].FieldCount[value] += 1
 	}

web/src/ActivityPage.js

@@ -411,9 +411,9 @@ class ActivityPage extends BaseListPage {
           <Col span={1} />
         </Row>
         <Row style={{marginTop: "20px"}} >
-          <Col span={1} key="left-spacer" />,
+          <Col span={1} key="left-spacer" />
           {this.renderSubPieCharts()}
-          <Col span={1} key="left-spacer" />,
+          <Col span={1} key="left-spacer" />
         </Row>
       </React.Fragment>
     );