As a WordPress user, there are times whereby you are unable to make any kind of progress with your project owing to a number of errors. For instance, did you know that the inability to create a new directory within your WordPress project structure can disable you from adding anything to your website or application? Usually, the issue lies with the permissions structure and if not properly or correctly configured, these permissions can prevent you from writing files into your project structure. When, in the course of your WordPress project, you find yourself not able to create new folders, then this means that your administrative privileges are insufficient to reach the core of the project.
Whenever you find that WordPress cant create directory error, try looking first at your permissions from the level of the web administrator to determine which locks have been allocated mistakenly and what to be done to enable the writing of new files. Memory issues are also a leading cause of the error as a full drive will not allow any new writes unless some of the files have been first moved to create space for the new files. At times, you could even be trying to add a new page to your web layout but run into the same errors as a result of less than sufficient memory. Modifying permissions is one of the most popular ways of working your way around this problem in addition to making updates to your wordpress core and plugins to flush out any problems. In some cases, changing into root user gives you more permissions to change the directory structure and make sure your current project resides in a rewritable drive.
This very same error also arises when you are making updates to your wordpress core and you will always face the same message when unpacking the files that are included with the update. As a root user, you can override the directories but when you switch back into a normal user, access to these files will be restricted. The best way of going around these errors is to get your permissions right and work within folders and drives that do not have restrictions for writing new files. This way, you will be able to fix directory errors and enable the easy addition and modification of your WordPress projects.