Hi,
We encountered with the error on the dual write page, when we click on “We are trying to refresh UAT database from PROD, database refresh is successful, while doing setup for Dual write in UAT environment after refresh, we are facing below error when we click on “Apply solution” after doing the Reset link:

Steps followed are as below:
Step 1: Stop all table maps.
Step 2: On Reset link, select Current Database Environment, Acknowledge reset and force reset, click on legal entity and then completing the reset process.
Step 3: Click on “Apply solution” and got the error:
[Unknown] Failed to get solutions containing entity maps. - Type=Microsoft.PowerPlatform.Dataverse.Client.Utils.DataverseConnectionException, Msg=Failed to connect to Dataverse(Type=System.AggregateException, Msg=One or more errors occurred. (Exception - Fault While initializing client - RefreshInstanceDetails))
PU version for UAT and PROD: Update57 (7.0.6861.53)
Can you help us to rectify this issue.
Thankyou,
AyuSri.