login failure for user

login failure for user admin from 14.1.1.2 via api
Hello my friends
I upgraded the router to the latest version 6.48 and then it gives a failure to log in from the mikro winbox mobile app
Before the update everything was fine
I checked the api settings and there is nothing
can you help

What was your previous version?
When it was very old, you will need to update your api program because the authentication in the api has changed.