ArtZ91

Deprecation reproduced by request like:
curl -v --http1.1 "https://mysite.com//admin?mdrv=mysite.com"

I think it’s because two slashes presents in request and nginx configuration not handle this case correctly.

I think it’s file permission issue, but it’s hard to explain what wrong.

I use PHP method set_error_handler to catch any errors and set_exception_handler to catch exceptions. I see that @rmdir( $dir ); at 3269 cause E_WARNING with message No such file or directory, it’s strange, isn’t?

Need more detail code handling to know, what happening:
— Maybe it’s really no directory and need to skip rmdir to avoid warning.
— Maybe it’s some permission issue and need additional checks in code, idk.

That fact of using @ operator looks strange, you trying to suppress error output, but the error still visible for set_error_handler and still logged in that custom handler logic.

I check the problem again on fresh WordPress installation with minimal custom theme.
Error was catched by custom set_error_handler method added in functions.php

In admin.php:1768 the unlink method silenced with @ operator.

I think the problem that @ operator only hide warning from being displayed, but it’s still be catched by set_error_handler

I use this code usually to detect deprecations or _doing_it_wrong WP notices.

set_error_handler( function ( $errNo, $errStr, $errFile, $errLine ) {

    $errorLevels = [
        E_ERROR => 'E_ERROR',
        E_WARNING => 'E_WARNING',
        E_PARSE => 'E_PARSE',
        E_NOTICE => 'E_NOTICE',
        E_CORE_ERROR => 'E_CORE_ERROR',
        E_CORE_WARNING => 'E_CORE_WARNING',
        E_COMPILE_ERROR => 'E_COMPILE_ERROR',
        E_COMPILE_WARNING => 'E_COMPILE_WARNING',
        E_USER_ERROR => 'E_USER_ERROR',
        E_USER_WARNING => 'E_USER_WARNING',
        E_USER_NOTICE => 'E_USER_NOTICE',
        E_STRICT => 'E_STRICT',
        E_DEPRECATED => 'E_DEPRECATED',
        E_USER_DEPRECATED => 'E_USER_DEPRECATED',
        E_ALL => 'E_ALL',
    ];

    $errorLevel = $errorLevels[ $errNo ] ?? 'Unknown error';

    $log = sprintf( "[%s]: %s in %s on line %d",
        $errorLevel,
        $errStr,
        $errFile,
        $errLine
    );

    error_log( $log );

    $logExtended = in_array( $errNo, [
        E_USER_NOTICE,
        E_DEPRECATED,
        E_USER_DEPRECATED,
        E_WARNING,
        E_ERROR
     ] );

     if ( $logExtended ) {
        $log_ext = json_encode( [
            'ERROR_LEVEL' => $errorLevel,
            'HTTPS' => $_SERVER['HTTPS'] ?? 'OFF',
            'HTTP_HOST' => $_SERVER['HTTP_HOST'] ?? 'NULL',
            'HTTP_REFERER' => $_SERVER['HTTP_REFERER'] ?? 'NULL',
            'HTTP_USER_AGENT' => $_SERVER['HTTP_USER_AGENT'] ?? 'NULL',
            'IS_WP_CRON' => defined( 'DOING_CRON' ) && DOING_CRON,
            'REMOTE_ADDR' => $_SERVER['REMOTE_ADDR'] ?? 'NULL',
            'REQUEST_METHOD' => $_SERVER['REQUEST_METHOD'] ?? 'NULL',
            'REQUEST_URI' => $_SERVER['REQUEST_URI'] ?? 'NULL',
            'SCRIPT_FILENAME' => $_SERVER['SCRIPT_FILENAME'] ?? 'NULL',
            'SERVER_NAME' => $_SERVER['SERVER_NAME'] ?? 'NULL',
        ] );
        $backtrace = print_r( debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS ), true );
        error_log( $log_ext );
        error_log( $backtrace );
    }
} );