functions, but this first PR adds support for the aggregate functions `AVG`,
`COUNT`, `MAX`, `MIN`, and `SUM`.
+- **install/index.php - Fix leak which breaks compatibility with current Backdrop
+ ([#17249](https://github.com/civicrm/civicrm-core/pull/17249))**
+
### CiviContribute
- **Partial Refunds (Work towards