Spring Boot, Social Logins, and Google App Engine Issue Resolution

We are seeking a skilled and experienced freelancer who can help us resolve an issue with our project on Google App Engine. Our application, built using Spring Boot and incorporating social logins, is functioning perfectly on localhost. However, when deployed on Google App Engine, we encounter a persistent 401 error after successful login attempts.

We require a freelancer who possesses in-depth knowledge and hands-on experience with Spring Boot, social logins (such as OAuth), and deploying applications on Google App Engine. Your expertise and problem-solving abilities will be invaluable in identifying and rectifying the root cause of the issue.