PHP File Manager

Error while copying from upfile/simulation/del/1/case01innishi.csv to upfile/simulation/case01innishi.csv

Name	Size	Modified	Perms	Owner
..
del	Folder	16.03.26 08:01	0775	azureuser:azureuser
file	Folder	16.03.26 08:01	0775	azureuser:azureuser
file2	Folder	16.03.26 08:01	0775	azureuser:azureuser
OLD	Folder	16.03.26 08:02	0775	azureuser:azureuser
(CP5001)20220913_1550-1700 .csv	146.33 KiB	22.03.23 04:10	0777	azureuser:azureuser
(SEADOM7)20220913_1550-1700.csv	88.01 KiB	22.03.23 04:10	0777	azureuser:azureuser
00-SEADOM7-CP50site.txt	690 B	30.09.22 05:24	0777	azureuser:azureuser
del.php	4.55 KiB	21.07.22 10:15	0777	azureuser:azureuser
download.php	2.69 KiB	21.02.22 11:44	0777	azureuser:azureuser
file01.csv	208 B	07.07.23 05:53	0777	azureuser:azureuser
file02.csv	110 B	07.07.23 05:53	0777	azureuser:azureuser
file03.csv	110 B	07.07.23 05:53	0777	azureuser:azureuser
file04.csv	110 B	07.07.23 05:53	0777	azureuser:azureuser
file05.csv	110 B	07.07.23 05:53	0777	azureuser:azureuser
file06.csv	110 B	07.07.23 05:53	0777	azureuser:azureuser
sim_flag.txt	1 B	07.07.23 12:22	0777	azureuser:azureuser
upload.php	12.81 KiB	30.03.23 07:47	0777	azureuser:azureuser
upload_20230329.php	11.65 KiB	07.02.23 08:11	0777	azureuser:azureuser
upload_start.php	613 B	21.02.22 11:14	0777	azureuser:azureuser
upload_v2.php	11.65 KiB	07.02.23 08:11	0777	azureuser:azureuser
Full size: 279.7 KiB, files: 16, folders: 4