Double log entries (double the fun?)

I have a strange issue. Almost definitely I am doing something stupid, but I can’t figure out where the stupid is.

So in my debug.log, I am getting double entries, like so:

a
b
c
a
b
c

But it seems like it’s related to whatever process/call is being run. For example, I may have a double entry when an AJAX call fully completes, with a start like:

2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with mootensai\enhancedgii\Bootstrap::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Module::getModule] Loading module: gii
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with yii\shell\Bootstrap::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with omnilight\scheduling\Bootstrap::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with yii\queue\db\Queue::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with yii\queue\db\Queue::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with silverslice\queueFailed\QueueFailed::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with justcoded\yii2\eventlistener\components\EventListener::bootstrap()
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with yii\log\Dispatcher
2022-11-19 18:29:07 [127.0.0.1][106][-][trace][yii\base\Application::bootstrap] Bootstrap with brussens\maintenance\Maintenance::bootstrap()

to where the AJAX call returns the data.

For clarity, it is NOT like this:

a
a
b
b
c
c

I have scanned my configuration several times and can’t figure out what is causing this. Below is my logging configuration. Any help is appreciated!

<?php

$config['components']['log']['tracelevel'] = YII_DEBUG ? 3 : 0;
$config['components']['log']['flushInterval'] = YII_DEBUG ? 1 : 1000;

/**
 * be sure to add any env vars here that should be masked, e.g., API keys,
 * passwords, etc., usually found in $HOME/.env
 */
$loggerMaskVars = [
    '_SERVER.HTTP_AUTHORIZATION',
    '_SERVER.PHP_AUTH_USER',
    '_SERVER.PHP_AUTH_PW',
    '_SERVER.DB_USER',
    '_SERVER.DB_PASS',
    '_SERVER.EMAIL_USERNAME',
    '_SERVER.EMAIL_PASSWORD',
];

$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'categories' => ['yii\swiftmailer\Logger::add'],
    'enabled' => YII_DEBUG,
    'enableRotation' => true,
    'logFile' => '@runtime/logs/mailer.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

// perf profiling
$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => $isProfilingEnabled,
    'levels' => ['profile'],
    'except' => ['yii\base\Application:bootstrap', 'yii\db\*', 'yii\web\*', 'yii\queue\*'],
    'enableRotation' => true,
    'logFile' => '@runtime/logs/profile.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

// these are picked up by newrelic!
$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => true,
    'levels' => ['error', 'warning'],
    'enableRotation' => true,
    'except' => ['apicall', 'yii\web\HttpException:404'],
    'logFile' => '@runtime/logs/errors.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => true,
    'enableRotation' => true,
    'maxLogFiles' => 20,
    'categories' => ['apicall'],
    'logFile' => '@common/logs/apicalls.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

// include env vars in this one -- used when debugging but doesn't
// go to Newrelic, etc.
$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => true,
    'levels' => ['error', 'warning'],
    'enableRotation' => true,
    'except' => ['apicall', 'yii\web\HttpException:404', 'yii\base\View::renderFile'],
    'logFile' => '@runtime/logs/errors-full.log',
    //'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => true,
    'enableRotation' => true,
    'categories' => ['yii\web\HttpException:404'],
    'logFile' => '@runtime/logs/404.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

$config['components']['log']['targets'][] = [
    'class' => 'yii\log\FileTarget',
    'enabled' => true,
    'enableRotation' => true,
    'except' => [
        'apicall',
        'yii\web\HttpException:404',
        'yii\db\*',
        'yii\web\UrlManager::parseRequest',
        'yii\httpclient\*',
        'yii\base\View::renderFile',
    ],
    'logFile' => '@runtime/logs/debug.log',
    'logVars' => [], // don't include ENV vars
    'maskVars' => $loggerMaskVars,
];

$config['components']['log']['targets'][] = [
    'class' => 'yii\log\DbTarget',
    'enabled' => true,
    'levels' => ['info'],
    'except' => ['apicall', 'yii\base\Application:bootstrap', 'yii\db\*', 'yii\web\*', 'yii\queue\*', 'application'],
    'maskVars' => $loggerMaskVars,
];