ErrorCode: 12029; Error: Failed to connect to the server for the operation. ErrorCode: 12002; Error: The operation has timed out – PB Docs 2022

The following error occurs when trying to run the installable
cloud app.

Or

Cause 1 &
solution:

The server is not running or started successfully. For
example, the port number is occupied by the other program.

To resolve the error, check and make sure the server is
running successfully.

Cause 2 &
solution:

The error is caused by a network connection problem.

To resolve the error, check and make sure the network
connection between the client and the server is configured and
working correctly.