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Saturday, April 18th 2020, 12:06pm

KRPano tiles not loading but Pano2VR tiles do

Hi. When my panos are uploaded to my server, some tiles upon first loading do not download, leaving black holes in the final render. This does not happen when viewed locally via krpano tools.

I have attached a couple of screen grabs of what this looks like. I am trying to enable debug mode when viewing the panos in the browser but my coding knowledge is limited. Can anyone tell me how to implement debug mode when viewing my panos in the browser. I am aware this could also be a server problem when delivering the tiles but would like to check if any krpano issues are there via debug mode.

This link will take you to a series of 360VR photos where you will hopefully see the issue in action. https://virtualvisitr.com/panoramas/DailyVR/tour-c.html . once in a 360 image twirl around the photo up and down, left and right. Do you see black tiles?

Thank you
Thomas
thomasmcvea has attached the following images:
  • screenshot-virtualvisitr.com-2020.04.jpg
  • screenshot-virtualvisitr.com-2020.04.18-10_12_46.jpg

This post has been edited 3 times, last edit by "thomasmcvea" (Apr 18th 2020, 3:18pm)


2

Saturday, April 18th 2020, 3:17pm

To further test. I have created two directories on the server with same panos. One with KRPANO output and one with PANO2VR output.
KRPANO output: https://virtualvisitr.com/panoramas/Dail…-20-5/tour.html
PANO2VR output: https://virtualvisitr.com/panoramas/Dail…O2VR/index.html

The PANO2VR output does not have any missing tile issues. I am wondering if this could be a bug in krpano tile generation?

This post has been edited 1 times, last edit by "thomasmcvea" (Apr 18th 2020, 11:23pm)


Sergey74

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Posts: 193

Location: Russia, Chelyabinsk

Occupation: professional noob

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3

Saturday, April 18th 2020, 4:23pm

In Russia, your site is not accessible at all. But both panoramas open without problems through VPN through the United States and Great Britain (without losing tiles)
translation difficulties *huh*

4

Saturday, April 18th 2020, 4:54pm

Thanks Sergey

In Russia, your site is not accessible at all.
Really!?

Sergey74

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Posts: 193

Location: Russia, Chelyabinsk

Occupation: professional noob

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5

Saturday, April 18th 2020, 5:14pm

Yes, I tested it on several services
Sergey74 has attached the following images:
  • rus.jpg
  • uk.jpg
translation difficulties *huh*

6

Saturday, April 18th 2020, 6:19pm

I'm loosing tiles... I'd say this is a server problem.

maybe you can fix it by adding :

Source code

1
<network retrycount="10" />

(default is 2)

https://krpano.com/docu/xml/#network

ps. cool panorama photos !

--- EDIT ---

i get even flickering tiles... really strange...
and i got this for one panorama

Forbidden
You don't have permission to access this resource.
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

reload and it worked again... *confused*

This post has been edited 1 times, last edit by "indexofrefraction" (Apr 18th 2020, 6:33pm)


7

Saturday, April 18th 2020, 6:34pm

Looks like the server is forbidding the request for some reason. I thought maybe your file upload was interrupted and didn't finish, but the server is displaying a 403 error which means it knows the file is there but refuses to send it. I might try to upload again and overwrite the existing files. Or you might need to talk to the host. Maybe a load limit issue?

andrew22222

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Posts: 397

Location: Australia

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8

Sunday, April 19th 2020, 1:51am

I see this from Australia (krpano version). These are the only two tiles missing in all the 360s.

Chrome
Windows 10

Hope that helps.







9

Sunday, April 19th 2020, 10:13am

Hi,

this is very clearly a server issue - after a several loading requests your server starts blocking some request. Maybe it is overloaded or has a limit of requests/second or so.

Please contact your hoster for more information!

That happens in your krpano AND in your pano2vr example, see in the networks tab in the browsers developer tools for files with status 403.

But krpano retries failed downloads only 2 times by default.
As can be seen in the network tab, pano2vr also retries failed downloads, but more often (I don't know how often by default).

So as already commended above add this line anywhere in your xml, maybe even with a higher number:

Source code

1
<network retrycount="10" />

Then krpano will retried the downloads more often and it will work.

E.g. here your tour with retrycount=99 (set as url parameter):
https://virtualvisitr.com/panoramas/Dail…k.retrycount=99

But a note about that - that will be more like a workaround, normally a (good) server shouldn't act like this. E.g. your server could also fails at the initial html page load and then you will got an error anyway.

The real and only correct solution would be contacting your hoster for solving that problem (like removing some limits or upgrading the server).

Best regards,
Klaus

10

Sunday, April 19th 2020, 6:52pm

Thank you all for taking the time to help me here and flush out the issue. I'll be contacting my hosting company first thing in the morning. *cursing*

Meanwhile, I have implemented the network retrycount as a temporary workaround. Thank you to those that recommended it, it's something I did not know about.

Thomas