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Id value is not valid for the Knowledge__kav standard controller

I've created a simple Visualfore page and a Apex class to process particular record of Knowledge__kavstandard object.

Visualforce Page:
<apex:page standardController="Knowledge__kav" extensions="KnowledgeController"  title="Knowledge__kav Object">

</apex:page>


Apex Class:
public with sharing class KnowledgeController {
    public String knowledgeID {get; set;}
    public KnowledgeController(ApexPages.StandardController stdController) {
        try {
            knowledgeID = ApexPages.currentPage().getParameters().get('id');
            System.debug('knowledgeID ===== '+knowledgeID);
           
            } catch(Exception e) {
            System.debug('ERROR :: ' + e.getMessage());
        }        
    }
}
For that, I'm passing simple URL parameter as ID (Knowledge__kav record ID) like /apex/KnowledgeAsPDF?id=ka02a0000004JeTAAU

But I'm getting the below error message ​on visualforce page.
Id value <Knowledge__kav record ID> is not valid for the Knowledge__kav standard controller

Page Preview:

VF Page Preview with Error message
Knowledge__kav SOQl Query:

SOQL Query with specific ID result

Please help me to solve this issue.
NagendraNagendra (Salesforce Developers) 
Hi,

The error is because of invalid ID. We can have Knowledge as a standard controller. Check the ID value from article management and try passing it in the URL. Let me know if this doesn't work still

Thanks,
Nagendra
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ERRORS                  
────────────────────────
Knowledge does not exist


@nagendra,

Knowledge is not valid for a standard controller

Hattie Du CaneHattie Du Cane
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"I can't take all the credit—my Mom works on the Rose Parade floats and she's killer at this stuff. I told her a couple months ago I wanted a costume to end all costumes for the Halloween bash and I knew the theme and it kinda just spiraled from there."

"Okay but like, how does it work?" Caleb countered, admiring the detail in the scales and head and teeth.

"Well, I stand in this whole which basically zips up around my waist and also up the neck. The other person, that's you, lays facedown on the hospital bed with your legs controlling the tail and your head controlling the dragon head. Your hands you can use to flap the wings on the side or work smoke lever."

Caleb realized that would mean he'd be in a costume all night and he was kind of bummed about that fact, but Lane was the president, and this would almost ensure an automatic entry into the frat. Pledge life wouldn't last forever. There would be plenty of parties. The fast track felt very in sight.

"Look, I know it's a sacrifice and you have an amazing costume...I promise we will find you a sexy girl later on in the night and you can use my bedroom for whatever kinky shit you're into, okay? I need to nail this and blow everyone away in the costume contest. That trust-fund-asshole Jared is wearing a working Ripley robot suit from Alien, so it's game fucking on." He wasn't necessarily giving Caleb a frat president order, which he could very easily do if he wanted to, but Caleb wanted to get in very badly. It was only one party. Fuck it right? Maybe he'd follow through and wingman him into some very tight college pussy later that night. And it would be nice to have one of the only solo beds to do so.

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It was around 10 o'clock by the time they were fully suited up in the costume in a comfortable position.

Lane had said it was going to be super hot inside the dragon material, though it had been installed with one of those professional fans used by costumed Disney characters all over the world. He suggested if Caleb was okay with it, that he should just wear his boxers. The problem was, Caleb wasn't wearing any boxers. He had purposefully gone commando underneath the gladiator skirt because he was feeling particularly daring that night. He told him he'd take the robe part off, but leave just the leather skirt. He didn't explain why.

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The pièce de résistance was a hidden button that allowed preloaded smoke cannisters in the nostrils to blow aromatic puffs of smoke into the air while two bulbs burned an orange glow. Lane's mom knew her shit, apparently. At least Caleb could have fun with that throughout the night.

Caleb did find it incredibly comfortable just being able to chill like this and Lane cracked enough jokes to make him feel relaxed in this obviously silly situation.

Right before getting in for the final time to make their triumphant entrance downstairs to the increasingly busy party, Lane had texted one of the other pledges to bring up a couple Fuckeroo's—the name of a house-made cocktail that was ostensibly a triple Long Island Ice Tea. It was basically the type of shit you weren't even allowed to order at a TGI Friday's for legal purposes. Since Caleb wouldn't be drinking again until their first combined bathroom break of the night, Lane bid him Cheers, and down the hatch it went. Caleb almost coughed it up after downing such an intense amount of alcohol all at once—but what was a 19-year-old liver for, anyway, but if not for shenanigans such as this? There would be plenty more of this during the impending hazing, he was sure of it.

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Caleb lay down on his chest, shirtless, on the comfy hospital bed and wiggled his body into the unzipped upper portions of the dragon. He wrapped his legs around either side of Lane's waist and was surprised when Lane actually grabbed for a hidden belt which went over Caleb's lower back to keep him firmly in place. This helped strap them together so that walking would be easier. Lane grabbed Caleb's sides to pull him back so that he was firmly attached to him, as the dragon tail required Caleb's legs to be almost fully hanging off of the back of the bed for it to fully work.