I recently encountered a similar H10 error and found that the main issue was with environment variables not being properly set up for the application to recognize Heroku’s assigned port. Even though Heroku recommends letting the system handle port allocation, many setups override it with a static value. I resolved my problem by ensuring that the configuration was correctly picking up the PORT variable and that the database credentials were correctly defined, especially when using managed databases. Careful scrutiny of the logs often gives a hint if a misconfiguration is at fault. Consider redeploying after rechecking these settings.
I experienced similar issues when deploying n8n on Heroku and found that ensuring all required environment variables are consistently named and accessible was key. My first step was to review the Heroku logs in real time to pinpoint configuration issues, and I discovered that even slight typos in variable names can cause launch failures. I also verified that the application properly referenced the dynamically assigned PORT variable. This approach led me to correct missing or misconfigured settings, allowing the application to start successfully. It is advisable to double-check all database settings and deployment instructions.
hey, try using heroku’s built in DATABASE_URL instead of manually setting host and user. i faced similiar issues and once i corrected that, the h10 error went away. also, check your dyno logs for any misconfiguration.