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The way to fix the ”uncaught typeerror: cannot read property ‘value’ of null” error?
The cause: The element with the id input not existing will be the cause. Let me explain it in simpler terms: var input = document.getElementById("input"); input // when this fails, it returns null. input = null var inputVal = input.value; // this is the same as the following. var inputVal = null.valRead more
The cause: The element with the id input not existing will be the cause. Let me explain it in simpler terms:
Solution: You can fix this issue by making sure that
btn
, or any object you use, is not null before you use it. For example:How to solve the ”uncaught typeerror: $(…).modal is not a function” error?
The cause: The reason for this problem is that you called the modal function before including the bootstrap javascript. Not jQuery, but bootstrap.js defines the modal. Additionally, it's crucial to remember that jQuery is required by bootstrap in order to define the modal function, therefore you musRead more
The cause: The reason for this problem is that you called the
modal
function before including the bootstrap javascript. Not jQuery, but bootstrap.js defines themodal
. Additionally, it’s crucial to remember that jQuery is required by bootstrap in order to define themodal
function, therefore you must include jQuery before bootstrap’s javascript.Solution: Just make sure to include jQuery and bootstrap’s javascript before calling the
modal
function to avoid the error.E.g: You can use the following:
Resolve the: unable to import module ‘index’: error?
The cause: This issue often appears when the specified library in the Python code cannot be located by your Lambda environment. This is due to the fact that not all Python libraries come bundled with Lambda. Solution: Create a deployment package or Lambda layer that contains the libraries you intendRead more
The cause: This issue often appears when the specified library in the Python code cannot be located by your Lambda environment. This is due to the fact that not all Python libraries come bundled with Lambda.
Solution: Create a deployment package or Lambda layer that contains the libraries you intend to utilize in your Python code for Lambda in order to fix this mistake.
Note: Don’t forget to place the Python library you imported within the /python folder.
See lessHow to solve the ”typeerror: zip argument #1 must support iteration” error?
The cause: I think you get the error because of the expression zip(float(price), Bids) Solution: You should use itertools.repeat() in the first argument expression to make tuples combining float(price) with each element of the array Bids >>> import itertools >>> price = str(u'12.34Read more
The cause: I think you get the error because of the expression
zip(float(price), Bids)
Solution: You should useitertools.repeat()
in the first argument expression to make tuples combiningfloat(price)
with each element of the arrayBids
Why do I get the error ”typeerror: super(type, obj): obj must be an instance or subtype of type”?
The cause: This error occurs because super cannot called be with an unrelated class/type. Solution: You should call super using the UrlManager class as first argument not the URL model. So you cannot do: >>> class D: ... pass ... >>> class C: ... def __init__(self): ... super(D, sRead more
The cause: This error occurs because
super
cannot called be with an unrelated class/type.Solution: You should call
super
using theUrlManager
class as first argument not theURL
model.So you cannot do:
You need to do:
Or in Python 3:
How to fix the error ”typeerror: require(…) is not a function”?
The cause: This error happens due to forget to place a semicolon between the require call, so the JavaScript engine assumed that the parenthesis surrounding our instantly invoked function expression were actually an argument list for another call of the result returned from require Solution: To solvRead more
The cause: This error happens due to forget to place a semicolon between the
require
call, so the JavaScript engine assumed that the parenthesis surrounding our instantly invoked function expression were actually an argument list for another call of the result returned fromrequire
Solution: To solve the error, place a semicolon between your
require
call and an immediately invoked function expression and clean up any cyclic dependencies from your code.What should I do with ”typeerror: len() of unsized object” error?
The cause: This error happens because there is only one value (5s) in the array a. The NumPy array a is a scalar and cannot be used as a container type for the len() function because it only contains one value. Because scalars are not container types that can store 0 or more elements, you cannot useRead more
The cause: This error happens because there is only one value (5s) in the array
a
. The NumPy arraya
is a scalar and cannot be used as a container type for thelen()
function because it only contains one value. Because scalars are not container types that can store 0 or more elements, you cannot use thelen()
function with them. Scalars never have more than one element and don’t have the len()
method declared on them.Solution: You can use the
array.size
property which is always defined whether it’s a scalar array or not instead of relying on thelen()
function to determine the number of elements in a NumPy array:Solve the ”typeerror encoding is an invalid keyword argument for this function” error?
The cause: This error occurs because the open method does not have a parameter with the name encoding and you are using an argument with that name. Solution: You can solve the problem by using the io module. like this: import io trump = io.open('speeches.txt', encoding='utf8').read()
The cause: This error occurs because the open method does not have a parameter with the name encoding and you are using an argument with that name.
Solution: You can solve the problem by using the
io
module. like this:import io
How to fix the ”’trim’ is not a recognized built-in function name.” error?
The cause: This error happens because TRIM is introduced in SQL Server and can't be used in older version of SQL Server. Solution: You need to use LTRIM and RTRIM as the following: DECLARE @ss varchar(60) SET @ss = ' admin ' select RTRIM(LTRIM(@ss)) Or you can create your own custom function likeRead more
The cause: This error happens because
TRIM
is introduced in SQL Server and can’t be used in older version of SQL Server.Solution: You need to use
LTRIM
andRTRIM
as the following:Or you can create your own custom function like following if you don’t like using
LTRIM
,RTRIM
everywhere.How to fix the ”thread 1: exc_bad_instruction (code=exc_i386_invop, subcode=0x0)” issue?
The cause: This error happens because you are calling a function by passing a parameter of a Core Data managed object's property. At the time of calling the object was no longer existed. I think this line is a mistake: secondNumber = Screen.text!.toInt()! It means: Get the Screen object, get the texRead more
The cause: This error happens because you are calling a function by passing a parameter of a Core Data managed object’s property. At the time of calling the object was no longer existed.
I think this line is a mistake:
It means: Get the Screen object, get the text property and please crash if it doesn’t exist, then get the text converted to an integer, and please crash if it doesn’t exist.
And the
!
means: “I am sure this thing exists, so please crash if it doesn’t”. And it caused this error.Solution: You can fix the issue by checking if the managed object exists or not before calling the function.