diff --git a/src/atlasComponents/sapi/sapi.service.ts b/src/atlasComponents/sapi/sapi.service.ts
index 0fec93688ff9f67edbcac8dfec02043e374a1e36..0750c09315d429dee2d64b41680eecdd6288b35a 100644
--- a/src/atlasComponents/sapi/sapi.service.ts
+++ b/src/atlasComponents/sapi/sapi.service.ts
@@ -96,7 +96,7 @@ export class SAPI{
   static get BsEndpoint$(): Observable<string> {
     if (!!BS_ENDPOINT_CACHED_VALUE) return BS_ENDPOINT_CACHED_VALUE
     const rootEl = document.querySelector('atlas-viewer')
-    const overwriteSapiUrl = rootEl.getAttribute(CONST.OVERWRITE_SAPI_ENDPOINT_ATTR)
+    const overwriteSapiUrl = rootEl?.getAttribute(CONST.OVERWRITE_SAPI_ENDPOINT_ATTR)
     
     const endpoints = overwriteSapiUrl
       ? [ overwriteSapiUrl ]
diff --git a/src/viewerModule/nehuba/mesh.service/mesh.service.spec.ts b/src/viewerModule/nehuba/mesh.service/mesh.service.spec.ts
index 7db5392a46b74554df8c9e2db2ab8d5e221ab44b..f5bea95d183a58649bb52caedbd27430cfc2b47c 100644
--- a/src/viewerModule/nehuba/mesh.service/mesh.service.spec.ts
+++ b/src/viewerModule/nehuba/mesh.service/mesh.service.spec.ts
@@ -107,6 +107,10 @@ describe('> mesh.service.ts', () => {
             [labelIndex2]: fits2
           }
         })
+        const mockStore = TestBed.inject(MockStore)
+        
+        mockStore.overrideSelector(atlasSelection.selectors.selectedTemplate, {} as any)
+        mockStore.overrideSelector(atlasSelection.selectors.selectedParcellation, {} as any)
       })
 
       describe("> auxMesh defined", () => {