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Error : TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, null given

Backtrace:
/modules/tadgallery/index.php (9)

Errors
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $isAdmin in file /modules/tadgallery/function.php line 365
Warning: Undefined variable $ok_cat in file /modules/tadgallery/function.php line 378
Error: TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, null given in file /modules/tadgallery/header.php line 15

Deprecated

Queries
0.000108 - SET SQL_BIG_SELECTS = 1
0.000636 - SELECT * FROM config WHERE (`conf_modid` = '0' AND `conf_catid` = '1') ORDER BY conf_order ASC
0.000311 - SELECT sess_data, sess_ip FROM session WHERE sess_id = '8nkj53i0qc5rvqjsjjgo4eea34'
0.000378 - SELECT * FROM modules WHERE dirname = 'tadgallery'
0.000478 - SELECT COUNT(*) FROM group_permission WHERE (`gperm_modid` = '1' AND (`gperm_groupid` = '3') AND `gperm_name` = 'module_read' AND `gperm_itemid` = '23')
0.000318 - SELECT * FROM config WHERE (`conf_modid` = '23') ORDER BY conf_order ASC
0.000151 - DELETE FROM protector_access WHERE expire < UNIX_TIMESTAMP()
0.000181 - SELECT COUNT(*) FROM protector_access WHERE ip='18.218.38.125' AND request_uri='/modules/tadgallery/index.php?csn=19&g2p=2&loadtime=1586372617'
0.000133 - SELECT COUNT(*) FROM protector_access WHERE ip='18.218.38.125'
0.000167 - INSERT INTO protector_access SET ip='18.218.38.125', request_uri='/modules/tadgallery/index.php?csn=19&g2p=2&loadtime=1586372617', expire=UNIX_TIMESTAMP()+'60'
0.000252 - select csn,enable_upload_group from tad_gallery_cate
Total: 11

Blocks
Total: 0

Extra
Included files: 88 files
Memory usage: 923280 bytes

Timers
XOOPS took 0.031 seconds to load.
XOOPS Boot took 0.024 seconds to load.
Module init took 0.007 seconds to load.