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Rupali Belpande 8Rupali Belpande 8 

This error occurred when the flow tried to update records: An unexpected error occurred. Please include this ErrorId if you contact support: 1741453033-1871835 (-548403183).

AshwiniAshwini (Salesforce Developers) 
Hi Rupali,
The error is caused by time out of an non-selective SOQL Query.

To prevent SOQL Query time outs, make sure to use selective criteria, for the above example, instead of using the does NOT equal True, use 
Closed Equals Boolean False
Using "Equals" instead of "Does not equal", will be a selective query, and in this way it would not time out.

Please check below articles for more information
https://help.salesforce.com/s/articleView?id=000383910&type=1 (https://help.salesforce.com/s/articleView?id=000383910&type=1)  

https://developer.salesforce.com/blogs/engineering/2013/07/maximizing-the-performance-of-force-com-soql-reports-and-list-views 

If this information helps, please mark the answer as best. Thank you