magento 2 enterprise admin showing blank page

This is Magento bug. Wrong paths to Windows are generated. The fixed fix is

Magento 2.3.0 – 2.3.3

the string

if (0 === strpos($realPath, $directory)) {
return true;
to replace

$realDirectory = $this->fileDriver->getRealPath($directory);
if ($realDirectory && 0 === strpos($realPath, $realDirectory)) {
return true;

Size of a Directory

The du command displays the amount of file space used by the specified files or directories. If the specified path is a directory, du summarizes disk usage of each subdirectory in that directory. If no path is specified, du reports the disk usage of the current working directory .

sudo du -sh /var