fixed crash in schemaCell

1 files changed, 1 insertions, 1 deletions

diff --git a/src/client/views/collections/CollectionSchemaCells.tsx b/src/client/views/collections/CollectionSchemaCells.tsx
index 7aa8f42b0..bb5acc48a 100644
--- a/src/client/views/collections/CollectionSchemaCells.tsx
+++ b/src/client/views/collections/CollectionSchemaCells.tsx
@@ -301,7 +301,7 @@ export class CollectionSchemaCell extends React.Component<CellProps> {
             if (start !== -1) {
                 positions.push(start);
             }
-            while (start < contents.length && start !== -1) {
+            while (start < contents?.length && start !== -1) {
                 term = term.slice(start + search.length + 1);
                 tally += start + search.length + 1;
                 start = term.indexOf(search);