Unable to fetch app definition

[DLPC_GISD]

Good afternoon!

We are having sudden issues with some of our applications accessing PostgreSQL DB as the details shown below:

Unable to fetch app definition. Error: Data table 'STREETLIGHT' is not accessible due to: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. Error: Data table 'Assigned Pole' is not accessible due to: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

Any feedback is much appreciated.