E_NOTICE for ob_end_clean() and ob_end_flush()

[wmurfee]

Description of the problem
This is an issue on EE 7.3+ with PHP 8.2+ with ob_end_clean() and ob_end_flush() located in View.php. I'm getting the errors below in my control panel when debugging.

Error Messages

ob_end_clean(): Failed to delete buffer. No buffer to delete
ee/ExpressionEngine/Service/View/View.php, line 142
Severity: E_NOTICE
ob_end_flush(): Failed to delete and flush buffer. No buffer to delete or flush
ee/ExpressionEngine/Service/View/View.php, line 167
Severity: E_NOTICE

Error Log
ERROR - 2024-10-08 14:59:58 --> Severity: E_NOTICE --> ob_end_clean(): Failed to delete buffer. No buffer to delete /var/www/html/admin/ee/ExpressionEngine/Service/View/View.php 142
ERROR - 2024-10-08 14:59:58 --> Severity: E_NOTICE --> ob_end_flush(): Failed to delete and flush buffer. No buffer to delete or flush /var/www/html/admin/ee/ExpressionEngine/Service/View/View.php 167

Environment Details:
This is my local environment running DDEV, which is up to date.

Possible Solution
This seemed to fix it, or at least make the notice go away.

Error on admin/ee/ExpressionEngine/Service/View/View.php 142:

if (ob_get_level()) {
			ob_end_clean();
		}

Error on admin/ee/ExpressionEngine/Service/View/View.php 167:

 if (ob_get_level()) {
			ob_end_flush();
		}

[intoeetive]

@wmurfee would you mind trying the fix suggested in referenced pull request if it's also fixing the issue? #4524

[wmurfee]

@intoeetive Seems to have fixed the ob_end_clean() notice, but the ob_end_flush() notice is still showing:

Notice
ob_end_flush(): Failed to delete and flush buffer. No buffer to delete or flush
ee/ExpressionEngine/Service/View/View.php, line 171
Severity: E_NOTICE

[bryannielsen]

@wmurfee I've pushed another commit up to that PR branch to resolve an issue with failing tests. Would you mind testing one last time and we'll get this into 7.5.2 if it looks good on your end.

[wmurfee]

@bryannielsen Just tested it, looks good on my end. No ob_end_clean() or ob_end_flush() errors.