mkdir error when saving settings and compiling SASS [#3027311]

Getting mkdir error when saving theme settings form.

Error

Warning: mkdir(): File exists in Drupal\Core\File\FileSystem->mkdirCall() (line 237 of core/lib/Drupal/Core/File/FileSystem.php).
Drupal\Core\File\FileSystem->mkdirCall('sites/default/files/seven', 509, , NULL) (Line: 222)
Drupal\Core\File\FileSystem->mkdir('sites/default/files/seven', 509, 1, NULL) (Line: 1184)
drupal_mkdir('sites/default/files/seven', 509, 1) (Line: 451)

Steps to reproduce the problem

Save configuration in Bootstrap4 settings or other theme settings page.
Appearance > Bootstrap4 > Settings
/admin/appearance/settings/bootstrap4

Comment	File	Size	Author
#2	bootstrap4-mkdir-error-fix-3027311-2-D8.patch	614 bytes	kelvinwong

Comments

Comment #1

21 January 2019 at 14:01

KelvinWong created an issue. See original summary.

Comment #2

kelvinwong commented 21 January 2019 at 14:11

Status	File	Size
new	bootstrap4-mkdir-error-fix-3027311-2-D8.patch	614 bytes

The problem happens when the theme folder in the public file directory is already existed. The patch provided added an if statement to avoid the creation of theme folder when it is already there.