Hi there, i have started doing the app customization specialist superbadge, but as a pre requisite its asking me to install an unmanaged package, but when im trying to install it, it says-This app can't be installed.
There are problems that prevent this package from being installed.
Package Not FoundThe requested package doesn't yet exist or has been deleted. If this is a recently created package version, please try again in a few minutes or contact the package publisher.
please help thank you 

Hi,
plz tell me whats wrong with my code:
global class batchaccountdescupdate implements database.batchable<sObject>,database.stateful{
global Database.QueryLocator start(Database.BatchableContext BC){
string query='SELECT Description FROM Account';
return Database.getQueryLocator(query);
}
global void execute(database.batchablecontext BC, list<Account> scope){
for(Account a: scope){
if(a.Description=='Not Available')
a.Description='Please fill details, else record will be made inactive';
}
update scope;
}
global void finish(database.batchablecontext BC,list<Account> scope){
integer totalemployeecount=0;
for(Account a: scope){
totalemployeecount=totalemployeecount+a.NumberOfEmployees;
}
update scope;
}
}
here is the error im getting:
Error: Compile Error: Class batchaccountdescupdate must implement the method: void Database.Batchable<SObject>.finish(Database.BatchableContext) at line 1 column 14
thanks.

Hi, I am learning SF developer. I created 100 records in Account object using SQL query. then im trying to delete all those records using SOQL query and for loop here is my code:
list<Account> newlist=new list<Account>();
newlist=[SELECT Id,Name FROM Account WHERE Name='test name'];
system.debug('list'+newlist);
list<Account> deletelist=new list<Account>();
for(Account a: newlist){
    a.Name='test name';
    deletelist.add(a);
}
system.debug('list'+deletelist);
delete deletelist;
but i am unable to delete. i know i can use work bench for this but i want to delete using SOQL here is the error im facing:
Line: 10, Column: 1
System.DmlException: Delete failed. First exception on row 0 with id 0016F00003O5AOEQA3; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, acountdeletetrigger: execution of BeforeDelete caused by: System.NullPointerException: Attempt to de-reference a null object Class.accountdeleteclass.deletecheck: line 3, column 1 Trigger.acountdeletetrigger: line 3, column 1: []
please tell me whats wrong thanks

I have written a test class for which it is showing 45% coverage, when i clicked on the code coverage to see what part of my code is not tested, the option is none and i cant see all tests option also i cannot see the blue and red coloured highlights in my test class? how can i see the coloured highlights and how can i get the all tests option?
THANKS!

Hi, I am learning SF developer. I created 100 records in Account object using SQL query. then im trying to delete all those records using SOQL query and for loop here is my code:
list<Account> newlist=new list<Account>();
newlist=[SELECT Id,Name FROM Account WHERE Name='test name'];
system.debug('list'+newlist);
list<Account> deletelist=new list<Account>();
for(Account a: newlist){
    a.Name='test name';
    deletelist.add(a);
}
system.debug('list'+deletelist);
delete deletelist;
but i am unable to delete. i know i can use work bench for this but i want to delete using SOQL here is the error im facing:
Line: 10, Column: 1
System.DmlException: Delete failed. First exception on row 0 with id 0016F00003O5AOEQA3; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, acountdeletetrigger: execution of BeforeDelete caused by: System.NullPointerException: Attempt to de-reference a null object Class.accountdeleteclass.deletecheck: line 3, column 1 Trigger.acountdeletetrigger: line 3, column 1: []
please tell me whats wrong thanks

I have written a test class for which it is showing 45% coverage, when i clicked on the code coverage to see what part of my code is not tested, the option is none and i cant see all tests option also i cannot see the blue and red coloured highlights in my test class? how can i see the coloured highlights and how can i get the all tests option?
THANKS!