The server encountered an internal error that prevented it from fulfilling this request. java.lang.NullPointerException
49
What is a NullPointerException, and how do I fix it?
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
75940
Connection error: "org.jsoup.UnsupportedMimeTypeException: Unhandled content type"
98074
jQuery.ajax gives "TypeError: Cannot read property 'documentElement' of null" on server but not local
156920
Java.lang.verifyerror how do I fix or even find out the root cause?
5721
Value passed with request.setAttribute() is not available by request.getParameter()
138687
How to fix "System.QueryException: List has more than 1 row for assignment to SObject"
137692
NullPointerException when working with arrays
87728
ArgumentNullException or NullReferenceException from extension method?
68222
Reference to undeclared entity exception while working with XML
130819
Nullpointerexception while setting a bean
11537
What is IndexOutOfBoundsException? How can I fix it?
23999
NullPointerException while parsing XML callout response
72009
How to Prevent the System.QueryException
73285
Null Pointer Exception in XMl Parsing
5099
How to fix org.hibernate.LazyInitializationException - could not initialize proxy - no Session
48221
Solving "The ObjectContext instance has been disposed and can no longer be used for operations that require a connection" InvalidOperationException