Parse Error when updating or installing SparkPost 1.4

WordPress: 5.9.2 CiviCRM Version: 5.48.1 PHP Version: 4.74.1

Attempting to install SparkPost 1.4 gets the below critical error in WordPress:

Parse error: syntax error, unexpected ';' in /public_html/wp-content/uploads/civicrm/ext/com.cividesk.email.sparkpost/CRM/Sparkpost/Upgrader.php on line 107

When viewing line 106 of com.cividesk.email.sparkpost/CRM/Sparkpost/Upgrader.php it looks like there is a missing close brackets. The code is:

106 if (!self::canbeStored($key, $cryptoRegistry) {

I tried to change this to: 106 if (!self::canbeStored($key, $cryptoRegistry)) {

I now get this error:

Fatal error: Uncaught TypeError: Argument 1 passed to CRM_Admin_Page_Extensions::createExtendedInfo() must be an instance of CRM_Extension_Info, null given, called in /public_html/wp-content/plugins/civicrm/civicrm/CRM/Admin/Form/Extensions.php on line 74 and defined in /public_html/wp-content/plugins/civicrm/civicrm/CRM/Admin/Page/Extensions.php:332 
Stack trace: 
#0 /public_html/wp-content/plugins/civicrm/civicrm/CRM/Admin/Form/Extensions.php(74): CRM_Admin_Page_Extensions::createExtendedInfo(NULL) 
#1 /public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Form.php(668): CRM_Admin_Form_Extensions->preProcess() 
#2 /public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/QuickForm/Action/Display.php(76): CRM_Core_Form->buildForm() 
#3 /public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Controller.php(203): CRM_Core_QuickForm_Action_Display->perform(Object(CRM_Admin_Form_Extensions), 'display') 
#4 / in /public_html/wp-content/plugins/civicrm/civicrm/CRM/Admin/Page/Extensions.php on line 332