I am getting error:

Parsing error: Expression expected

Here is my code base:

    export interface TableRow {
      rowKey: string;
      rowCells: {[key: string]: any};
      rowExpanded?: React.ReactNode;
    }
class MvSortTable extends React.Component<Props, State> {
 ...
      toggleAllRows = () => {
        const shouldExpand = this.allRowsCollapsed(this.state.expandedRows);
        const expandedRows: {[key: string]: boolean} = {};
    
        this.props.rows?.forEach((row) => {
         expandedRows[row.rowKey] = shouldExpand;
        });
    
        this.setState({ expandedRows, allRowsCollapsed: !shouldExpand });
      }
...

Error come from when I add ? into this.props.rows...

How can I fix this error?????