Symptoms
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A website is not accessible with one of the following errors in a web browser:
404 file not found
500 external Server Error
Error 500 move_uploaded_file(): open_basedir restriction in effect. File(/path/to/the/directory) is not within the allowed path(s): (/var/www/vhosts/example.com/:/tmp/)
No input file specified.
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The following error message appears in the domain's Logs page (Domains > example.com > Logs):
<...> open_basedir restriction in effect. File(/path/to/the/directory) is not within the allowed path(s) <...>
Uncaught Exception: Session: Configured save path '/path/to/the/directory' is not a directory, doesn't exist or cannot be created.
Cause
The PHP script is trying to access the folder for which access is not allowed. This restriction is defined by the PHP open_basedir variable for each domain separately. By default, open_basedir allows access to the tmp and domain's document root directories, as well as the system's default sessions path.
Resolution
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Go to Domains > example.com > PHP Settings.
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Add the path from the error message to the
open_basedirfield:-
on Linux
Below is an example for the directory /path/to/the/directory:
{WEBSPACEROOT}{/}{:}{TMP}{/}{:}/path/to/the/directory
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on Windows
Below is an example for the directory
E:pathtothedirectory:{WEBSPACEROOT}{/};{TMP};{/};"E:pathtothedirectory"
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Apply the changes.
Note: The default session.save_path for Linux is (RedHat-based) /var/lib/php/session/ or (Debian-based) /var/lib/php/sessions/, and for Windows is C:WindowsTemp