scandir(): (errno 2): No such file or directory in /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php

[snelweg]

Script URL: https://help.xxx/install/update.php?mig ... complete=1
Version of script: 3.6.1
Hosting company: self
URL of phpinfo.php:
URL of session_test.php:
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Warning: scandir(home/xxx/domains/help.xxx.nl/public_html/cache): Failed to open directory: No such file or directory in /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php on line 816

Warning: scandir(): (errno 2): No such file or directory in /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php on line 816

Fatal error: Uncaught TypeError: array_diff(): Argument #1 ($array) must be of type array, false given in /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php:816 Stack trace: #0 /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php(816): array_diff() #1 /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php(800): hesk_rrmdir() #2 /home/xxx/domains/help.xxx.nl/public_html/install/update.php(159): hesk_purge_cache() #3 /home/xxx/domains/help.xxx.nl/public_html/install/update.php(146): hesk_iFinish() #4 {main} thrown in /home/xxx/domains/help.xxx.nl/public_html/inc/admin_functions.inc.php on line 816

[Klemen]

Context please?