The Toolbox Server cannot connect to the PostgreSQL database when the server application and PostgreSQL are deployed on separate machines
The error log shows:
Npgsql.PostgresException: 28000: no pg_hba.conf entry for host "", user "qsartoolbox", database "EpiReports42".
This happens when the QSAR Toolbox Server is installed on one machine and the PostgreSQL database is deployed on a different machine. The PostgreSQL server would need to be configured to allow access to the deployed databases for the QSAR Toolbox Server Application.