Hi Azeem,

Description
When trying to access a List View in some of the Objects (Accounts, Leads...) using Lightning Experience we're receiving an error:

UNKNOWN_EXCEPTION: An unexpected error occurred. Please include this ErrorId if you contact support: 754897040-396679 (711635086)
or
Unfortunately, there was a problem. Please try again. If the problem continues, get in touch with your administrator with the error ID shown here and any other related details. Error ID: 549415590-144446 (-325052874)

This works correctly when using Salesforce Classic.

Please note that Error Ids may be different.

Resolution:
Please switch back to the Salesforce Classic interface and Edit and Save (no changes required) the affected List View. Once you've edited and saved, please return to Lightning Experience and see if the list view works as expected. These steps should resolve the issue in most of the cases.
Details on how to do switch between Classic and Lightning, here(https://help.salesforce.com/articleView?id=lex_switching_uis.htm&type=0).

If the issue is not resolved, please create a case with Salesforce Support. 

Hope this helps.

Please mark this as solved if it's resolved so that it gets removed from the unanswered queue which results in helping others who are encountering a similar issue.

Thanks,
Nagendra