[2025-12-11 12:13:01] [stockchecker] Lock acquired successfully. PID: 129660
 Exception when calling FbaInventoryV1Api->getInventorySummaries: Client error: `POST https://api.amazon.com/auth/o2/token` resulted in a `401 Unauthorized` response:
{"error_description":"Client authentication failed","error":"invalid_client"}

<br><br><br>Script executed in 0.27750897407532 seconds.<br />
<b>Warning</b>:  file_put_contents(/var/www/html/crons/cron_lock.log): Failed to open stream: Permission denied in <b>/var/www/html/crons/cron_lock.php</b> on line <b>213</b><br />
[2025-12-11 12:13:02] [stockchecker] Lock released successfully.