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Warning: fopen(/var/www/html/fastcoo-tech/fs_files/fm-track/premium/lockinvoice/2025-03-15/dy.lock): failed to open stream: No such file or directory in /var/www/html/fastcoo_v4/employees/sukhram/FMV4_files/premium/dynamic_invoice_temp.php on line 39

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Unable to obtain lock, the previous process is still going on.