G Suite sync fails unexpectedly about directory-connector HOT 8 CLOSED

{
  "installedVersion": "2.6.0",
  "environmentUrls": {
    "base": "REDACTED",
    "api": null,
    "identity": null,
    "webVault": null,
    "icons": null,
    "notifications": null
  },
  "appId": "REDACTED",
  "accessToken": "REDACTED",
  "refreshToken": "REDACTED",
  "userEmail": "REDACTED",
  "userId": "REDACTED",
  "kdf": 0,
  "kdfIterations": 100000,
  "directoryType": 2,
  "directoryConfig_0": {
    "ssl": false,
    "sslAllowUnauthorized": false,
    "port": 389,
    "currentUser": false,
    "ad": true,
    "password": null
  },
  "directoryConfig_2": {
    "privateKey": "[STORED SECURELY]",
    "domain": "REDACTED",
    "adminUser": "REDACTED",
    "clientEmail": "REDACTED"
  },
  "directoryConfig_1": {
    "key": null
  },
  "directoryConfig_3": {
    "token": null
  },
  "syncConfig": {
    "users": true,
    "groups": false,
    "interval": 5,
    "removeDisabled": false,
    "overwriteExisting": false,
    "useEmailPrefixSuffix": false,
    "creationDateAttribute": "whenCreated",
    "revisionDateAttribute": "whenChanged",
    "emailPrefixAttribute": "sAMAccountName",
    "memberAttribute": "member",
    "userObjectClass": "person",
    "groupObjectClass": "group",
    "userEmailAttribute": "mail",
    "groupNameAttribute": "name",
    "groupPath": "CN=Users",
    "userPath": "CN=Users",
    "userFilter": "exclude:REDACTED"
  },
  "organizationId": "REDACTED"
}

  "organizationId": "REDACTED"