[5.4] Use the correct function to get the message from an exception

[laoneo]

• I read the Generative AI policy and my contribution is either not created with the help of AI or is compatible with the policy and GNU/GPL 2 or later.

Summary of Changes

The exception object doesn't have an errorMessage function, getMessage should be used instead.

Testing Instructions

• Disable mail in the global Joomla configuration
• In the file /administrator/components/com_users/src/Model/MailModel.php add after line 203 the code throw new RuntimeException('test');
• Send a mass mail to the users

Actual result BEFORE applying this Pull Request

The following error is shown:
Call to undefined method RuntimeException::errorMessage()

Expected result AFTER applying this Pull Request

A warning message appears with text 'test'.

Link to documentations

Please select:

• Documentation link for guide.joomla.org:

• No documentation changes for guide.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[richard67]

The change is correct according to https://www.php.net/manual/en/class.exception.php .

There is no errorMessage() for the exception object, there is getMessage().

[MacJoom]

I have tested this item ✅ successfully on 1588657

But you have to add (for testing, before and after applying the patch)

throw new \RuntimeException('test'); //after line 203

Note the backslash before \RuntimeException

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[CSGoat0]

I have tested this item ✅ successfully on 1588657

Thanks @MacJoom for the correction.

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[richard67]

RTC

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