The Script Include record does not exist in the database or has been deleted from the sys_script_include table. (high likelihood)
The Script Include is inactive (Active field is false) or the application it belongs to is inactive. (high likelihood)
The Script Include exists in a different application scope and cross-scope access is not properly configured or the calling script lacks permission. (medium likelihood)
The Script Include name in the code does not match the exact Name field value in the Script Include record, including case sensitivity. (medium likelihood)
The Script Include has syntax errors or compilation issues preventing it from being loaded into the server-side JavaScript environment. (low likelihood)