Enrolment

Dears,

Anybody would help me please ,the flatfile enrollment stopped working for the past 5 days and i'm trying to make it working without success and also the enrollment not runing on the cron as below what i can do to fix it please i need help urgently. 

Server Time: Mon, 28 Mar 2016 16:49:04 +0300


Execute scheduled task: Cleanup old sessions
... started 16:49:04. Current memory use 9.6MB.
... used 10 dbqueries
... used 0.16700315475464 seconds
Scheduled task complete: Cleanup old sessions
Execute scheduled task: Send new user passwords
... started 16:49:04. Current memory use 10.8MB.
Creating passwords for new users...
... used 2 dbqueries
... used 0.29525399208069 seconds
Scheduled task complete: Send new user passwords
Execute scheduled task: Send failed login notifications
... started 16:49:05. Current memory use 10.8MB.
... used 2 dbqueries
... used 0.0010199546813965 seconds
Scheduled task complete: Send failed login notifications
Execute scheduled task: Background processing for gradebook
... started 16:49:05. Current memory use 10.8MB.
    Deleted old grade history records from 'grade_outcomes_history'
    Deleted old grade history records from 'grade_categories_history'
    Deleted old grade history records from 'grade_items_history'
    Deleted old grade history records from 'grade_grades_history'
    Deleted old grade history records from 'scale_history'
... used 7 dbqueries
... used 0.12437891960144 seconds
Scheduled task complete: Background processing for gradebook
Execute scheduled task: Background processing for events
... started 16:49:05. Current memory use 11.5MB.
... used 2 dbqueries
... used 0.00049686431884766 seconds
Scheduled task complete: Background processing for events
Execute scheduled task: Calculate completion data
... started 16:49:05. Current memory use 11.5MB.
... used 7 dbqueries
... used 0.078993082046509 seconds
Scheduled task complete: Calculate completion data
Execute scheduled task: Background processing for portfolio plugins
... started 16:49:05. Current memory use 14.5MB.
... used 0 dbqueries
... used 3.9100646972656E-5 seconds
Scheduled task complete: Background processing for portfolio plugins
Execute scheduled task: Background processing for plagiarism plugins
... started 16:49:05. Current memory use 14.5MB.
... used 0 dbqueries
... used 0.00069689750671387 seconds
Scheduled task complete: Background processing for plagiarism plugins
Execute scheduled task: Send calendar notifications
... started 16:49:05. Current memory use 14.6MB.
Updating calendar subscriptions:
... started 16:49:05. Current memory use 15.4MB.
Finished updating calendar subscriptions.
... used 1 dbqueries
... used 0.017596960067749 seconds
Scheduled task complete: Send calendar notifications
Execute scheduled task: Sync external blogs
... started 16:49:05. Current memory use 15.4MB.
... used 1 dbqueries
... used 0.0085630416870117 seconds
Scheduled task complete: Sync external blogs
Execute scheduled task: Background processing for question engine
... started 16:49:05. Current memory use 15.8MB.

  Cleaning up old question previews...done.

  Cleaning up old question statistics cache records...done.
... used 6 dbqueries
... used 0.043516159057617 seconds
Scheduled task complete: Background processing for question engine
Execute scheduled task: Forum mailings and maintenance jobs
... started 16:49:05. Current memory use 17.5MB.
Starting digest processing...
Cleaned old digest records
... used 3 dbqueries
... used 0.024892091751099 seconds
Scheduled task complete: Forum mailings and maintenance jobs
Cron script completed correctly
Cron completed at 16:49:05. Memory used 18.5MB.
Execution took 0.871084 seconds