[27-Aug-2021 08:28:19 +0200]: <b253125c> Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[27-Aug-2021 15:04:21 +0200]: <a557d98a> Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[02-Oct-2021 21:32:30 +0200]: <355e8115> Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[30-Oct-2021 18:18:09 +0200]: <3343c260> Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[27-Jan-2022 06:23:00 +0100]: <0affcbb1> Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[28-Mar-2022 07:21:17 +0200]: <4f59e1bd> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[28-Mar-2022 07:24:19 +0200]: <14212946> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 16:35:51 +0200]: <ea34bae5> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 18:48:24 +0200]: <b6b3f223> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 18:52:15 +0200]: <1d4732e1> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 19:20:37 +0200]: <8514ab15> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 19:25:55 +0200]: <b054466a> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 19:26:29 +0200]: <9148629b> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 19:27:33 +0200]: <bf020123> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[11-Jun-2022 19:29:27 +0200]: <91ef9176> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[12-Jun-2022 09:48:17 +0200]: <85f7e5de> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[12-Jun-2022 09:49:31 +0200]: <7d928443> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[13-Jun-2022 06:33:04 +0200]: <22aca128> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[17-Jun-2022 18:40:51 +0200]: <08d50947> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[19-Jun-2022 09:24:13 +0200]: <60a679e5> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[19-Jun-2022 09:36:53 +0200]: <3c0a391f> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[20-Jun-2022 06:52:50 +0200]: <b86f27f7> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists 
[09-Jul-2022 17:36:28 +0200]: <b945df28> [5 ERR] Migration query (ALTER TABLE carddav_addressbooks DROP authentication_scheme;) failed: [1091] Can't DROP 'authentication_scheme'; check that column/key exists