Error : Connection pool drained - too many concurrent requests: org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool

Hello Appian community,


I have been working on EPIC 3 Vehicle rental app from Applied development course and I am facing this error since yesterday.

All the sites(even the reference apps sites like ACME vehicle, Net zero Carbon etc) are having this error and I am unable to save any object and make changes in the applications.

The record type sync are failing for every application and that has impacted every interface and record relationships as well.

Please could someone look into this error and help figure out the solution.

Attaching below some screen shots.



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