Issue Call to undefined function plesk_str_replace()

[AYAM]

How can i fix this error when i try to access plesk ?

Type	Error
Message	Call to undefined function plesk_str_replace()
File	common_func.php
Line	576

 

[IgorG]

Usually, this error occurs due to a failed upgrade to Plesk Obsidian.
I suggest that you still try to complete your Plesk server upgrade.