fix(table-group) 💥 breaks on null children

[yogithesymbian]

✅ This ensures .length is only called on arrays.

case :

main.js:344 TypeError: Cannot read properties of null (reading 'length')
    at VueComponent.showEmptySlot (vue-good-table.esm.js:13780:82)

✅ Root Cause
this.paginated[0].children is null or undefined, so accessing .length throws an error.

🧩 Fix 1: Check Your rows Data / santizied the children also works

rows = rows.map(r => ({
  ...r,
  children: r.children ?? [], // replace null with empty array
}));

or

function sanitizeRows(rows) {
  return (rows || []).map(row => {
    const sanitized = { ...row };
    if (row.children === null || row.children === undefined) {
      sanitized.children = [];
    } else if (Array.isArray(row.children)) {
      sanitized.children = sanitizeRows(row.children); // recurse
    }
    return sanitized;
  });
}

or

never use rows as null . use [ ] instead

🧩 Fix 2: modified dist 😇