3 files changed, 6 insertions, 6 deletions
diff --git a/src/client/DocServer.ts b/src/client/DocServer.ts
index 47c63bfb7..dbe8e58b9 100644
--- a/src/client/DocServer.ts
+++ b/src/client/DocServer.ts
@@ -254,7 +254,7 @@ export namespace DocServer {
             const fieldMap: { [id: string]: RefField } = {};
             const proms: Promise<void>[] = [];
             for (const field of fields) {
-                if (field !== undefined) {
+                if (field !== undefined && field !== null) {
                     // deserialize
                     const prom = SerializationHelper.Deserialize(field).then(deserialized => {
                         fieldMap[field.id] = deserialized;
@@ -421,4 +421,4 @@ export namespace DocServer {
     function respondToDelete(ids: string | string[]) {
         _respondToDelete(ids);
     }
-}
-\ No newline at end of file
+}
diff --git a/src/client/northstar/dash-nodes/HistogramBinPrimitiveCollection.ts b/src/client/northstar/dash-nodes/HistogramBinPrimitiveCollection.ts
index 3e9145a1b..6b36ffc9e 100644
--- a/src/client/northstar/dash-nodes/HistogramBinPrimitiveCollection.ts
+++ b/src/client/northstar/dash-nodes/HistogramBinPrimitiveCollection.ts
@@ -3,7 +3,7 @@ import { AttributeTransformationModel } from "../../northstar/core/attribute/Att
 import { ChartType } from '../../northstar/model/binRanges/VisualBinRange';
 import { AggregateFunction, Bin, Brush, DoubleValueAggregateResult, HistogramResult, MarginAggregateParameters, MarginAggregateResult } from "../../northstar/model/idea/idea";
 import { ModelHelpers } from "../../northstar/model/ModelHelpers";
-import { LABColor } from '../../northstar/utils/LABcolor';
+import { LABColor } from '../../northstar/utils/LABColor';
 import { PIXIRectangle } from "../../northstar/utils/MathUtil";
 import { StyleConstants } from "../../northstar/utils/StyleContants";
 import { HistogramBox } from "./HistogramBox";
@@ -237,4 +237,4 @@ export class HistogramBinPrimitiveCollection {
         // }
         return StyleConstants.HIGHLIGHT_COLOR;
     }
-}
-\ No newline at end of file
+}
diff --git a/src/client/northstar/dash-nodes/HistogramBoxPrimitives.tsx b/src/client/northstar/dash-nodes/HistogramBoxPrimitives.tsx
index 5a16b3782..66d91cc1d 100644
--- a/src/client/northstar/dash-nodes/HistogramBoxPrimitives.tsx
+++ b/src/client/northstar/dash-nodes/HistogramBoxPrimitives.tsx
@@ -5,7 +5,7 @@ import { Utils as DashUtils, emptyFunction } from '../../../Utils';
 import { FilterModel } from "../../northstar/core/filter/FilterModel";
 import { ModelHelpers } from "../../northstar/model/ModelHelpers";
 import { ArrayUtil } from "../../northstar/utils/ArrayUtil";
-import { LABColor } from '../../northstar/utils/LABcolor';
+import { LABColor } from '../../northstar/utils/LABColor';
 import { PIXIRectangle } from "../../northstar/utils/MathUtil";
 import { StyleConstants } from "../../northstar/utils/StyleContants";
 import { HistogramBinPrimitiveCollection, HistogramBinPrimitive } from "./HistogramBinPrimitiveCollection";
@@ -119,4 +119,4 @@ export class HistogramBoxPrimitives extends React.Component<HistogramPrimitivesP
             </svg>
         </div>;
     }
-}
-\ No newline at end of file
+}