Object of class Illuminate\Database\Query\Expression could not be converted to string

[JC5]

Describe the bug

When I try to cache my Transaction model, I run into the title of this issue when the following query is being executed:

https://github.com/firefly-iii/firefly-iii/blob/1c8c038735eea258d3ad9db69af26d03206fa38f/app/Support/Models/AccountBalanceCalculator.php#L109

Stack Trace

See here, and:

#0 /home/runner/work/firefly-iii/firefly-iii/vendor/genealabs/laravel-model-caching/src/CacheKey.php(266): implode()
#1 /home/runner/work/firefly-iii/firefly-iii/vendor/genealabs/laravel-model-caching/src/CacheKey.php(52): GeneaLabs\LaravelModelCaching\CacheKey->getQueryColumns()
#2 /home/runner/work/firefly-iii/firefly-iii/vendor/genealabs/laravel-model-caching/src/Traits/Caching.php(182): GeneaLabs\LaravelModelCaching\CacheKey->make()
#3 /home/runner/work/firefly-iii/firefly-iii/vendor/genealabs/laravel-model-caching/src/Traits/Buildable.php(106): GeneaLabs\LaravelModelCaching\CachedBuilder->makeCacheKey()
#4 /home/runner/work/firefly-iii/firefly-iii/app/Support/Models/AccountBalanceCalculator.php(109): GeneaLabs\LaravelModelCaching\CachedBuilder->get()
#5 /home/runner/work/firefly-iii/firefly-iii/app/Support/Models/AccountBalanceCalculator.php(49): FireflyIII\Support\Models\AccountBalanceCalculator->recalculateLatest()
#6 /home/runner/work/firefly-iii/firefly-iii/app/Console/Commands/Upgrade/CorrectAccountBalance.php(55): FireflyIII\Support\Models\AccountBalanceCalculator::recalculateAll()
#7 /home/runner/work/firefly-iii/firefly-iii/app/Console/Commands/Upgrade/CorrectAccountBalance.php(47): FireflyIII\Console\Commands\Upgrade\CorrectAccountBalance->correctBalanceAmounts()
#8 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): FireflyIII\Console\Commands\Upgrade\CorrectAccountBalance->handle()
#9 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/Util.php(41): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#10 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\Container\Util::unwrapIfClosure()
#11 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(35): Illuminate\Container\BoundMethod::callBoundMethod()
#12 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/Container.php(690): Illuminate\Container\BoundMethod::call()
#13 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Command.php(213): Illuminate\Container\Container->call()
#14 /home/runner/work/firefly-iii/firefly-iii/vendor/symfony/console/Command/Command.php(279): Illuminate\Console\Command->execute()
#15 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Command.php(182): Symfony\Component\Console\Command\Command->run()
#16 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Concerns/CallsCommands.php(67): Illuminate\Console\Command->run()
#17 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Concerns/CallsCommands.php(28): Illuminate\Console\Command->runCommand()
#18 /home/runner/work/firefly-iii/firefly-iii/app/Console/Commands/Upgrade/UpgradeDatabase.php(81): Illuminate\Console\Command->call()
#19 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): FireflyIII\Console\Commands\Upgrade\UpgradeDatabase->handle()
#20 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/Util.php(41): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#21 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\Container\Util::unwrapIfClosure()
#22 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(35): Illuminate\Container\BoundMethod::callBoundMethod()
#23 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Container/Container.php(690): Illuminate\Container\BoundMethod::call()
#24 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Command.php(213): Illuminate\Container\Container->call()
#25 /home/runner/work/firefly-iii/firefly-iii/vendor/symfony/console/Command/Command.php(279): Illuminate\Console\Command->execute()
#26 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Console/Command.php(182): Symfony\Component\Console\Command\Command->run()
#27 /home/runner/work/firefly-iii/firefly-iii/vendor/symfony/console/Application.php(1029): Illuminate\Console\Command->run()
#28 /home/runner/work/firefly-iii/firefly-iii/vendor/symfony/console/Application.php(316): Symfony\Component\Console\Application->doRunCommand()
#29 /home/runner/work/firefly-iii/firefly-iii/vendor/symfony/console/Application.php(167): Symfony\Component\Console\Application->doRun()
#30 /home/runner/work/firefly-iii/firefly-iii/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(197): Symfony\Component\Console\Application->run()
#31 /home/runner/work/firefly-iii/firefly-iii/artisan(35): Illuminate\Foundation\Console\Kernel->handle()
#32 {main}

Environment
GitHub action.

Additional context
I also noticed this locally but this made it easy to see it's reproducible.

Thanks!