The “Reply Already Submitted” Crash

Working at RevenueCat offers a unique blend of intelligence and collaboration, as exemplified by a recent debugging challenge faced by the SDK team. The issue involved a "Reply already submitted" crash reported by a Flutter user, which led to an exploration of cause and effect across multiple layers of code and tools, including the Play SDK Console and Stack Overflow. Despite initial dead ends, the team's collective expertise, particularly a key suggestion from a colleague, facilitated the manual replication of the stack trace, which was crucial in identifying the root cause related to Google's BillingClient. Through persistent trial and error, including the use of creative strategies like the Network Link Conditioner, the team successfully reconstructed and then resolved the issue by ensuring the crash wouldn't recur, all while fostering a supportive and innovative work environment. This experience not only highlighted the importance of diverse problem-solving approaches but also underscored the value of a collaborative team culture in overcoming complex technical challenges.