Object reference not set to an instance of an object. NullReferenceException
289
What is a NullReferenceException, and how do I fix it?
89755
Why is "throw null" not creating a compilation error in Java?
128142
java.lang.NullPointerException at org.apache.jsp.foo_jsp._jspInit(foo_jsp.java:22)
87189
System.NullPointerException
28203
System.QueryException: List has no rows for assignment to SObject
58054
When is it OK to catch NullPointerException?
2116
IllegalArgumentException or NullPointerException for a null parameter?
73120
Nullpointerexception when trying to send data from activity to class
147251
How do I fix the error where I cannot make a static reference to a non-static input field?
7935
CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
96453
Caught Throwable or Exception is null
69771
NullPointerException when setting attribute?
10867
How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
138823
Why cast null to Object?
108336
Nullable Object must have a value #2
11458
NullReferenceException in Unity
131864
Member '' cannot be accessed with an instance reference