PHP Spark Error

Evening guys,
I have been using CI4 for a while preparing a new website.  Have updated from 4 to 4.0.2 tonight, and now have a need to re-run the database migrations, however any PHP spark command gives:

An uncaught Exception was encountered

Type:        ErrorException
Message:     Trying to get property 'maxDepth' of non-object
Filename:    /Users/DevUser/CI4Project/Code/vendor/codeigniter4/framework/system/CodeIgniter.php
Line Number: 232

Backtrace:
-232 - /Users/DevUser/CI4Project/Code/vendor/codeigniter4/framework/system/CodeIgniter.php::errorHandler
-193 - /Users/DevUser/CI4Project/Code/vendor/codeigniter4/framework/system/CodeIgniter.php::initializeKint
-168 - /Users/DevUser/CI4Project/Code/vendor/codeigniter4/framework/system/bootstrap.php::initialize
-44 - /Users/DevUser/CI4Project/Code/spark::require



The migrations have not been changed since the last time they were run, when Spark handled them fine.  Anyone any ideas?  

I have double checked with a composer update, and everything is up to date.

Rich