Qu'est-ce que no default engine was specified and no extension was provided. ?

"No default engine was specified and no extension was provided" is an error message that occurs when a file is being processed by a system or application that requires a specific search engine or program to interpret or execute the file, but no engine or program has been specified or provided.

When a file is processed, the system or application needs to know which tool or program to use to properly read, interpret, or execute the file's contents. This is usually done through the file's extension, which indicates the file type and helps the system determine which program or engine to use.

However, if a file lacks an extension or the system/application fails to recognize a valid extension, it won't know the correct engine or program to employ. Thus, the error message "no default engine was specified and no extension was provided" is displayed.

To resolve this error, you may need to check the file's extension and ensure it is correct. If there is no extension, you can try to figure out the file type and manually add the appropriate extension. Additionally, it may also be necessary to specify a default engine or program within the system or application settings to enable the processing of the file.