Approval request to requester group manager not working

[almondo1901]

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Is there an existing issue for this?

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Version

10.0.17

Bug description

When I try to create a business rule and select “Approval request to requester group manager” it is not sent to the manager.
The rule works by itself, but it does not send an approval request.
The problem has already appeared in earlier versions: https://forum.glpi-project.org/viewtopic.php?id=281868

Relevant log output

Page URL

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Steps To reproduce

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Your GLPI setup information

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Anything else?

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