Fehler beim Upgrade Seafile 7.0.5 nach 7.1.4

Beim Upgrade meines Seafile-servers von 7.0.5 nach 7.1.4 erhalte ich folgende Fehlermeldung:

seafile@Rasp-3-2-Ex:~/seafile-server-7.1.4/upgrade $ ./upgrade_7.0_7.1.sh

This script would upgrade your seafile server from 7.0 to 7.1
Press [ENTER] to contiune

renaming the gunicorn.conf to gunicorn.conf.py …


Updating seafile/seahub database …

[INFO] You are using SQLite3
[INFO] updating seahub database…
Traceback (most recent call last):
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 384, in
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 379, in main
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 275, in update_db
super(SQLiteDBUpdater, self).update_db()
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 129, in update_db
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 299, in update_seahub_sql
self.apply_sqls(self.seahub_db, sql_path)
File “/home/seafile/seafile-server-7.1.4/upgrade/db_update_helper.py”, line 289, in apply_sqls
sqlite3.OperationalError: duplicate column name: headers

Failed to upgrade your database

kann mir jemand helfen ?
Gruß HT.C