Cannot load key: Invalid dovecot key version

[Mrinal Sharma]

I am trying to use a newly added Local Validation functionality in dovecot version 2.3.11.  I am running dovecot inside a Docker container With base  image " debian:buster-slim". When I try to login through below command , a crash is seen. Algorithm Used is RS256 and certificate is self-signed.

'''
a1 login admin eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJhZG1pbiIsIm5hbWUiOiJKb2huIERvZSIsImV4cCI6MTcwMDIyNDg3MiwiaWF0IjoxNTE2MjM5MDIyfQ.gCXOiUDKV5Bjxp_Vkd-I76A86qxxsCCm5YTtvoLhS5CwOV5rBQozcvnkAOkaIEWWMQqFqEIdA6V9RBztl0XlMe5tyil-2NFaXiKsbv6aYmNnBgX678MZlXRi8UFrIK1ymc4ya7Xi11hV5tuTQHAqi6MPEOdB9zTrFBa9CPCKU25G458cd8SMy7t6i_pb-CrBKCA0KKLFF-SJyz4gSu4ce9FFBTx8oYS1lDaQvf6drNw-_N6FfA1k4HVgEK9bU-SEZkeqE0t5nsFA-7V1-BgYvNaR5-tpzOjymeJP7dZ7rJzUqchVz-Z9V3hONGJEuromcEzgve_r9NSBlUTZlcT8Eg
''''

dovecot_1                          | Sep 16 03:29:36 auth-worker(25): Info: pam(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): pam_authenticate() failed: Authenticat
ion failure (Password mismatch?)
dovecot_1                          | Sep 16 03:29:36 auth-worker(25): Debug: pam(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Finished passdb lookup
dovecot_1                          | Sep 16 03:29:36 auth-worker(25): Debug: conn unix:auth-worker (pid=24,uid=101): auth-worker<1>: Finished
dovecot_1                          | Sep 16 03:29:36 auth: Debug: pam(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Finished passdb lookup
dovecot_1                          | Sep 16 03:29:36 auth: Debug: oauth2(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Performing passdb lookup
dovecot_1                          | Sep 16 03:29:36 auth: Debug: oauth2(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Attempting to locally validate token
dovecot_1                          | Sep 16 03:29:36 auth: Debug: oauth2(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): callback(result: password_mismatch, error: Ca
nnot load key: Invalid dovecot key version)
dovecot_1                          | Sep 16 03:29:36 auth: Info: oauth2(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): oauth2 failed: Cannot load key: Invalid doveco
t key version
dovecot_1                          | Sep 16 03:29:36 auth: Debug: oauth2(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Finished passdb lookup
dovecot_1                          | Sep 16 03:29:36 auth: Debug: auth(admin,172.18.0.1,<Q5Bc4GWv9tqsEgAB>): Auth request finished


dovecot --version
2.3.11.3 (502c39af9)



dovecot -n
# 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf # OS: Linux 4.19.76-linuxkit x86_64 Debian 10.5 fuse.grpcfuse # Hostname: 45e39b46f6ab auth_debug = yes auth_mechanisms = plain oauthbearer xoauth2 auth_verbose = yes disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it log_path = /dev/stdout mail_debug = yes mail_location = maildir:/data/imap_store/%n mail_plugins = " quota"
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Greeting {
    auto = create
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    auto = no
    special_use = \Trash
  }
  prefix =
}
passdb {
  driver = pam
}
passdb {
  args = /etc/dovecot/dovecot-oauth2.plain.conf.ext
  driver = oauth2
  mechanisms = plain login
}
plugin {
  quota = maildir:User quota
  quota_rule = *:storage=5MB
  quota_status_nouser = DUNNO
  quota_status_overquota = 552 5.2.2 Mailbox is full
  quota_status_success = DUNNO
}
protocols = imap lmtp
service doveadm {
  inet_listener http {
    port = 80
  }
}
service lmtp {
  inet_listener lmtp {
    address = *
    port = 24
  }
  process_min_avail = 5
}
ssl = no
userdb {
  driver = passwd
}
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lmtp {
  mail_plugins = quota
  postmaster_address = postmaster at domainname } protocol lda {
  mail_plugins = " quota notify push_notification"
}
protocol imap {
  imap_metadata = yes
  mail_plugins = " quota imap_quota quota"
}

Any help would be appreciated.

Thanks,
Mrinal