Error on updating manifest cache

Hallo zusammen, nach dem Update von J 5.1.1 auf Joomla 5.1.2 erscheinen viele Fehlermeldungen, die ich mir nicht erklären kann. Kann mir jemand weiterhelfen wie die zustande kommen? Und wie ich die Fehler beheben kann?

Brief list of captured errors

Error on updating manifest cache: (type, element, folder, client) = (component, com_associations, com_associations, 1)

Error on updating manifest cache: (type, element, folder, client) = (component, com_fields, com_fields, 1)

Error on updating manifest cache: (type, element, folder, client) = (plugin, fields, plg_content_fields, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, contact, plg_editors-xtd_contact, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, fields, plg_editors-xtd_fields, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, menu, plg_editors-xtd_menu, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, calendar, plg_fields_calendar, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, checkboxes, plg_fields_checkboxes, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, color, plg_fields_color, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, editor, plg_fields_editor, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, imagelist, plg_fields_imagelist, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, integer, plg_fields_integer, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, list, plg_fields_list, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, media, plg_fields_media, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, radio, plg_fields_radio, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, sql, plg_fields_sql, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, text, plg_fields_text, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, textarea, plg_fields_textarea, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, url, plg_fields_url, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, user, plg_fields_user, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, usergrouplist, plg_fields_usergrouplist, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, phpversioncheck, plg_quickicon_phpversioncheck, 0)

Error on updating manifest cache: (type, element, folder, client) = (plugin, fields, plg_system_fields, 0)