query: Object reference not set to an instance of an object with no error line
positive_passages.docid: 289
positive_passages.text: What is a NullReferenceException, and how do I fix it?
negative_passages.docid: 70532
negative_passages.text: NullReferenceException after POST
negative_passages.docid: 13027
negative_passages.text: Object of class mysqli_result could not be converted to string
negative_passages.docid: 116133
negative_passages.text: Why do I get an "undefined reference" link error for a static member variable?
negative_passages.docid: 816
negative_passages.text: What is the difference between a variable, object, and reference?
negative_passages.docid: 66307
negative_passages.text: A field initializer cannot reference the nonstatic field, method, or property
negative_passages.docid: 3868
negative_passages.text: Why use the 'ref' keyword when passing an object?
negative_passages.docid: 144423
negative_passages.text: "No enclosing instance of type" error while calling method from another class in Android
negative_passages.docid: 27212
negative_passages.text: Variables might not have been initialized
negative_passages.docid: 109479
negative_passages.text: Class variables not yet supported
negative_passages.docid: 44561
negative_passages.text: How to reference non-static variable name from static context?
negative_passages.docid: 7935
negative_passages.text: CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
negative_passages.docid: 150853
negative_passages.text: An object reference is required to access non-static member
negative_passages.docid: 18225
negative_passages.text: Why does my object not show up?
negative_passages.docid: 10581
negative_passages.text: Avoiding NullPointerException in Java
negative_passages.docid: 38664
negative_passages.text: Keep getting this error: System.QueryException: List has no rows for assignment to SObject
negative_passages.docid: 39595
negative_passages.text: PHP class not storing reference