The URL 'Filepath\Filename.xlxs' does not exists. It may refers to a nonexistent file or folder, or refer to a valid file or folder that is not in current web

All of sudden, while you are using SharePoint in routine a certain error start appearing while creating or uploading a file to a SharePoint list or library.

Error: The URL 'Filepath\Filename.xlxs' does not exists. It may refers to a nonexistent file or folder, or refer to a valid file or folder that is not in current web

While browsing through the application and you know that the library/list path is valid, just copy the correlation ID and see what happen in log.

Log will show some SQL Server error just like below.

SqlError: 'The transaction log for database 'WSS_Content_01' is full due to 'ACTIVE_TRANSACTION'. '    Source: '.Net SqlClient Data Provider' Number: 9002 State: 4 Class: 17 Procedure: 'proc_WriteStreamToSQL' LineNumber: 21 Server: 'Server909'

Unknown SQL Exception 9002 occurred. Additional error information from SQL Server is included below.  The transaction log for database 'WSS_Content_01' is full due to 'ACTIVE_TRANSACTION'.

Unknown SQL Exception 3903 occurred. Additional error information from SQL Server is included below.  The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION.

Solution:

There are two possibilities either the drive where your database file resides is full or the Log/Data file for database do not have enough space for further transaction. The SQL Exception 9002 occurs for the same reason.

If you know much about SQL Server, you can try giving more space to database files otherwise contact your DB Admin.