I tried to create events. For the first 25 events it worked fine, after 25 events, I got an access denied error instead of the event configuration page:
"Entschuldigung, eine Bereitstellung ist uns gerade nicht möglich. Sie haben nicht die notwendigen Berechtigungen, um diese Seite aufzurufen."
The event is created in the database table civicrm_event but not shown in the event overview in civicrm. If I delete some rows in the sql database civicrm_event, I can create events again up to 25.
I turned on the debug mode. I think, this query is the problem:
CRM_Core_DAO: CONNECT: Checking for database specific ini ('') : database_ in options CRM_Core_DAO: QUERY: SELECT a.id as
id
, a.title astitle
FROM civicrm_event a LIMIT 25 OFFSET 0CRM_Core_DAO: query: QUERY DONE IN 0.000273 seconds. Result is 25 rows by 2 columns.
So the resultset has only the first 25 rows and the created event isn't in the resultset.
I use civicrm 4.7.19 with drupal 7.54