Error showing in commands

[pushpendra07]

Describe the bug
Showing error in Magento CLI commands
To Reproduce
Steps to reproduce the behavior:

1. Installed plugin by composer and run Magento2 upgrade command

Expected behavior
Commands should run without error
Screenshots

Environment (please complete the following information):

• OS: Centos
• Browser: chrome
• Cron Job Manager Version [1.8.0]
• Magento Version [2.2.4]
• PHP Version [7.1.0]

[Ethan3600]

@pushpendra07 Thanks for submitting this issue! I can't reproduce this on the latest version of the Cron Job Manager. Can you try upgrading to the latest version (v1.9.0).

[simonrl]

I can reproduce this on PHP 7.1, Magento 2.2.6, Cronjobmanager 1.9.0

I had a short look at the code, and it actually seems ok to me... so no idea where this error comes from.

To reproduce:

1. composer u --no-dev
2. php bin/magento setup:upgrade
   -> does not work, runs into mentioned error
3. rm -r generated/*
4. php bin/magento setup:upgrade
   -> still the same error.

All running in developer mode.

[pushpendra07]

@Ethan3600, It's showing same error for latest version

[Ethan3600]

Ok, I was on Magento version 2.3.1. That's why I didn't see it. Sorry for the mistake.

Good News: I was able to reproduce on Magento version 2.2.6

Bad News: This seems to be a bug in some versions of Magento 2.2.x: magento/magento2#6106

There were more issues opened up for this, and I can't tell which release the fix was merged into.

Anyway, the problem was this:

The CJM's code had a method signature with a return type-hint like this:
public function execute(int $scheduleId): bool

But, the generated code was spitting out something like this:
public function execute(int $scheduleId)

Which causes php to throw an error because the signature doesn't match.

I can confirm that this is fixed in the latest 2.2.x release (at the time of writing, it's v2.2.9).

I'm going to close this due to it being a Magento bug.

Feel free to comment to discuss further!