u

src/components/manifest/ManifestHeader.jsx

@@ -111,7 +111,7 @@ class ManifestHeader extends PureComponent {
     const useExternalNumber = Boolean(cfg.externalNumber);
 
     const selected =
-      parties.find((row) => row.id === partyId) ?? null;
+      (parties || []).find((row) => row.id === partyId) ?? null;
 
     const isDateEmpty = !date || String(date).trim() === '';
     const isPartyEmpty = partyId == null || partyId === '';
@@ -147,12 +147,12 @@ class ManifestHeader extends PureComponent {
             />
             <Autocomplete
               size="small"
-              options={parties}
+              options={parties || []}
               value={selected}
               loading={Boolean(partiesLoading)}
               disabled={saving || pdfUploading}
               getOptionLabel={(option) => partyDisplayName(kind, option)}
-              isOptionEqualToValue={(option, value) => option.id === value.id}
+              isOptionEqualToValue={(option, value) => option?.id === value?.id}
               onChange={this.handlePartyChange}
               sx={{
                 flex: { xs: '1 1 100%', sm: '2 1 200px' },