Export users not working

[harshit-17]

getting the below error while migrating users from redash source version 10 ( on virtual machine using docker-compose ) to redash target version 10 ( on k8s ):

importing: 50
   importing: 51
Could not create user: probably this user already exists but is not present in meta.json
   importing: 52
Could not create user: probably this user already exists but is not present in meta.json

Only 50 users are getting migrated, after that it is giving the above error, tried again by increasing the below env variable which defaults to 50, but that also not worked:

throttleLoginPattern: 1000/hour

can anyone help with this issue ?