Employee can't enroll to any course

Summar

An employee access to Me/Learning, search a course then navigate to the Course detail page. The employee click Enroll button at top of the page ,got following error message:

WLF:::WLF_ASSIGMENT_LEARNER_NOT_ACT

If the learning administrator try to assign a course to this employee, then assigned course can't be found in any of self learning data areas

But in same POD, no same issue on other employees

Content (required):

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):