diff --git a/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.test.tsx b/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.test.tsx
index e7e1a3ef90baa3db35e2a7779e0661d633a3a7ea..ef21f2dc7f3df531e4a1bc64d988af4546dceac7 100644
--- a/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.test.tsx
+++ b/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.test.tsx
@@ -69,12 +69,14 @@ describe('ProjectInfoDrawer', () => {
     const diseaseLink = screen.getByText(/Disease:/i);
     expect(diseaseLink).toBeInTheDocument();
 
-    const linkelement = screen.getByRole('link', { name: projectFixture.diseaseName });
+    const linkelement = screen.getByRole('link', {
+      name: projectFixture.diseaseName ? projectFixture.diseaseName : 'xyz',
+    });
     expect(linkelement).toBeInTheDocument();
-    expect(linkelement).toHaveAttribute('href', projectFixture.disease.link);
+    expect(linkelement).toHaveAttribute('href', projectFixture.disease?.link);
   });
 
-  it('should fetch diesease name when diseaseId is provided', async () => {
+  it('should fetch disease name when diseaseId is provided', async () => {
     await act(() => {
       renderComponent(MOCKED_STORE);
     });
@@ -82,9 +84,11 @@ describe('ProjectInfoDrawer', () => {
     const organismLink = screen.getByText(/Organism:/i);
     expect(organismLink).toBeInTheDocument();
 
-    const linkelement = screen.getByRole('link', { name: projectFixture.organismName });
+    const linkelement = screen.getByRole('link', {
+      name: projectFixture.organismName ? projectFixture.organismName : 'xyz',
+    });
     expect(linkelement).toBeInTheDocument();
-    expect(linkelement).toHaveAttribute('href', projectFixture.organism.link);
+    expect(linkelement).toHaveAttribute('href', projectFixture.organism?.link);
   });
 
   it('should render the source file download button', () => {
diff --git a/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.tsx b/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.tsx
index 73894aaf3e30bd33be35ea4d55c02b8d57b0227c..5a04b6fabcedce598ad481a6059e5ab30ee8c502 100644
--- a/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.tsx
+++ b/src/components/Map/Drawer/ProjectInfoDrawer/ProjectInfoDrawer.component.tsx
@@ -63,28 +63,32 @@ export const ProjectInfoDrawer = (): JSX.Element => {
               Manual
             </a>
           </li>
-          <li className="mt-2 text-hyperlink-blue">
-            <span className="text-black">Disease: </span>
-            <a
-              href={diseaseLink}
-              target="_blank"
-              rel="noopener noreferrer"
-              className="font-semibold hover:underline"
-            >
-              {diseaseName}
-            </a>
-          </li>
-          <li className="mt-2 text-hyperlink-blue">
-            <span className="text-black">Organism: </span>
-            <a
-              href={organismLink}
-              target="_blank"
-              rel="noopener noreferrer"
-              className="font-semibold hover:underline"
-            >
-              {organismName}
-            </a>
-          </li>
+          {diseaseName && (
+            <li className="mt-2 text-hyperlink-blue">
+              <span className="text-black">Disease: </span>
+              <a
+                href={diseaseLink}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="font-semibold hover:underline"
+              >
+                {diseaseName}
+              </a>
+            </li>
+          )}
+          {organismName && (
+            <li className="mt-2 text-hyperlink-blue">
+              <span className="text-black">Organism: </span>
+              <a
+                href={organismLink}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="font-semibold hover:underline"
+              >
+                {organismName}
+              </a>
+            </li>
+          )}
         </ul>
         <LinkButton className="mt-6" href={sourceDownloadLink} download="sourceFile.txt">
           Download source file
diff --git a/src/models/fixtures/projectFixture.ts b/src/models/fixtures/projectFixture.ts
index 06868af6d5692a22d0e0e5d733508cf56357d781..f228879defbd3933931013a7df3df918f342e40e 100644
--- a/src/models/fixtures/projectFixture.ts
+++ b/src/models/fixtures/projectFixture.ts
@@ -1,9 +1,22 @@
 import { ZOD_SEED } from '@/constants';
 // eslint-disable-next-line import/no-extraneous-dependencies
-import { createFixture } from 'zod-fixture';
+import { Fixture } from 'zod-fixture';
+import { diseaseNameGenerator } from '@/models/generators/diseaseNameGenerator';
+import { diseaseGenerator } from '@/models/generators/diseaseGenerator';
+import { organismGenerator } from '@/models/generators/organismGenerator';
+import { organismNameGenerator } from '@/models/generators/organismNameGenerator';
+import { topOverviewImageGenerator } from '@/models/generators/topOverviewImageGenerator';
 import { projectSchema } from '../projectSchema';
 
-export const projectFixture = createFixture(projectSchema, {
+const projectFixtureGenerator = new Fixture({ seed: ZOD_SEED }).extend([
+  diseaseNameGenerator,
+  diseaseGenerator,
+  organismNameGenerator,
+  organismGenerator,
+  topOverviewImageGenerator,
+]);
+
+export const projectFixture = projectFixtureGenerator.fromSchema(projectSchema, {
   seed: ZOD_SEED,
   array: { min: 1, max: 1 },
 });
diff --git a/src/models/generators/diseaseGenerator.ts b/src/models/generators/diseaseGenerator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1e8ae525f101fe84da27ec49f665e0481af429aa
--- /dev/null
+++ b/src/models/generators/diseaseGenerator.ts
@@ -0,0 +1,18 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { disease } from '@/models/disease';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+
+export const diseaseGenerator = Generator({
+  schema: ZodNullable,
+  filter: ({ context }) => {
+    // eslint-disable-next-line no-magic-numbers
+    return context.path.at(-1) === 'disease';
+  },
+  output: () =>
+    createFixture(disease, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});
diff --git a/src/models/generators/diseaseNameGenerator.ts b/src/models/generators/diseaseNameGenerator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..427c74b810e0b03f51711bd63c5dc25c1dbc5b3a
--- /dev/null
+++ b/src/models/generators/diseaseNameGenerator.ts
@@ -0,0 +1,10 @@
+import { ZodNullable, ZodString } from 'zod';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { Generator } from 'zod-fixture';
+
+export const diseaseNameGenerator = Generator({
+  schema: ZodNullable<ZodString>,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'diseaseName',
+  output: ({ transform }) => transform.utils.random.string({}),
+});
diff --git a/src/models/generators/organismGenerator.ts b/src/models/generators/organismGenerator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ae654656ca5554f2364c9e6fb8b46bdd3a919bdc
--- /dev/null
+++ b/src/models/generators/organismGenerator.ts
@@ -0,0 +1,16 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+import { organism } from '@/models/organism';
+
+export const organismGenerator = Generator({
+  schema: ZodNullable,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'organism',
+  output: () =>
+    createFixture(organism, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});
diff --git a/src/models/generators/organismNameGenerator.ts b/src/models/generators/organismNameGenerator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..25bd5c0fa491a874a4d08e471cfc5ae033ee35a9
--- /dev/null
+++ b/src/models/generators/organismNameGenerator.ts
@@ -0,0 +1,10 @@
+import { ZodNullable, ZodString } from 'zod';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { Generator } from 'zod-fixture';
+
+export const organismNameGenerator = Generator({
+  schema: ZodNullable<ZodString>,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'organismName',
+  output: ({ transform }) => transform.utils.random.string({}),
+});
diff --git a/src/models/generators/topOverviewImageGenerator.ts b/src/models/generators/topOverviewImageGenerator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fbdb047cac3cfa0de0a97e74e77b6a821ecbbbca
--- /dev/null
+++ b/src/models/generators/topOverviewImageGenerator.ts
@@ -0,0 +1,16 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { createFixture, Generator } from 'zod-fixture';
+import { ZOD_SEED } from '@/constants';
+import { ZodNullable } from 'zod';
+import { overviewImageView } from '@/models/overviewImageView';
+
+export const topOverviewImageGenerator = Generator({
+  schema: ZodNullable,
+  // eslint-disable-next-line no-magic-numbers
+  filter: ({ context }) => context.path.at(-1) === 'topOverviewImage',
+  output: () =>
+    createFixture(overviewImageView, {
+      seed: ZOD_SEED,
+      array: { min: 2, max: 2 },
+    }),
+});
diff --git a/src/models/projectSchema.ts b/src/models/projectSchema.ts
index 611b93a7ef6b0fa9cb76d5ef4d8cdfb92f8e9432..d3eeeb2a7a6ddc75c825c3bdb34e8f6caf99e74d 100644
--- a/src/models/projectSchema.ts
+++ b/src/models/projectSchema.ts
@@ -5,10 +5,10 @@ import { overviewImageView } from './overviewImageView';
 
 export const projectSchema = z.object({
   version: z.string(),
-  disease,
-  diseaseName: z.string(),
-  organism,
-  organismName: z.string(),
+  disease: disease.nullable(),
+  diseaseName: z.string().nullable(),
+  organism: organism.nullable(),
+  organismName: z.string().nullable(),
   status: z.string(),
   directory: z.string(),
   progress: z.number(),
diff --git a/src/redux/project/project.selectors.ts b/src/redux/project/project.selectors.ts
index aa0c62aee628115e23e91adb0099a84490989218..7ab9a0c284f2677f824887e702c7f2eaa334b859 100644
--- a/src/redux/project/project.selectors.ts
+++ b/src/redux/project/project.selectors.ts
@@ -49,12 +49,12 @@ export const diseaseNameSelector = createSelector(
 
 export const diseaseLinkSelector = createSelector(
   projectDataSelector,
-  projectData => projectData?.disease.link,
+  projectData => projectData?.disease?.link,
 );
 
 export const organismLinkSelector = createSelector(
   projectDataSelector,
-  projectData => projectData?.organism.link,
+  projectData => projectData?.organism?.link,
 );
 
 export const organismNameSelector = createSelector(