Some projects don't load, giving a BSOD

[BryceLTaylor]

Expected Behavior

Projects load when you go to their project page or straight to the editor.

Actual Behavior

There are a few projects that don't load, giving a Blue Screen of Death. I believe they likely have different causes, but I would like to track them in this issue.

Here are 2:
https://scratch.mit.edu/projects/281999647/
gives these errors: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/281999647/editor]: RangeError: Maximum call stack size exceeded

gui Unhandled Error: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/281999647/editor]: RangeError: Maximum call stack size exceeded

---

(This is filed in scratchfoundation/scratch-parser#56)

https://scratch.mit.edu/projects/286851747/
gives these errors:
www Unhandled project parsing error: SyntaxError: Unexpected token e in JSON at position 5234

Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/286851747/]: SyntaxError: Unexpected token e in JSON at position 5234

gui Unhandled Error: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/286851747/]: SyntaxError: Unexpected token e in JSON at position 5234

This is a different issue from #4649 and it does not give the assetid of null error in the console.

Steps to Reproduce

Load one of those projects
Note: see the errors roll in.

Operating System and Browser

Mac Chrome

[paulkaplan]

@kchadha It looks like that second project (286851747) is a result of a parser error. It has the string ...have\\been... which gets stripped by the parser to just have\een by https://github.com/LLK/scratch-parser/blob/master/lib/parse.js#L19

I can confirm this by trying to name a sprite e.g. "have\been" and watching the server fail to parse/save it.

[kchadha]

Filed scratchfoundation/scratch-parser#56 to track the bug @paulkaplan is talking about above.

[BryceLTaylor]

Here's another project that is experiencing this issue: https://scratch.mit.edu/projects/313551716/

[BryceLTaylor]

Here's another one that came in from the community: https://scratch.mit.edu/projects/313306253/

Their report:
"hi i was animating on scratch and i spent 4 hours on something and i saved and reloaded the page and when i clicked on the project it said there was a bug and i wont even load please try to fix it heres a link to it"

Perhaps it's related to a method of animation?

[BryceLTaylor]

I was manually checking all of the assets in the above project (313306253) Several of the costumes return a 404. A few others gave another type of error.

Sprite2:
costume1: 72227a89b84e103e7bbc76f9711d477a.png
costume2: 344b30a825267a1716b9be7cac1c50bc.png
costume3: 3681a0ad1ef8a57fc9574956fdedf07a.png

Sprite3:
costume1: 101832e0f3f51af5ffa3049f2d616f20.png

Sprite4:
costume1: c99d894405d0beaafaf7d8ee410fa78d.png
costume2: b2770e82fcc04ff1284a9fa7f4f464fd.png
costume3: 0b834a83408a276e988781b217696745.png

Sprite5:
costume1: b7638a7d0714e4c2e1251e2482a87c3c.png
costume2: 3ca96c701ad658a1ac1ec3aba8b72d91.png
costume3: d369af1b7333fa02df5e90a050a5cc48.png

Sprite6:
costume6: cd21514d0531fdffb22204e0ec5ed84a.svg didn't load but gave an error in the console

Sprite7:
costume1: 3339a2953a3bf62bb80e54ff575dbced.svg didn't load gave same error

All other images loaded

I checked them by downloading the project json, opening the md5 hashes listed for each asset into assets.scratch.mit.edu/...

I think the .svg files just don't load by going to that url the way .pngs do. I modified the project json for the default project by adding in costumes from the json of the downloaded file. It looks like if I added one that I could load from assets it would load the project just fine.
However if I put in one of the images that 404s it would not load, giving an error:

I'm not sure what is causing the png files to return 404s, or what's causing them to not upload.

[BryceLTaylor]

Another project that has a similar failure to load: https://scratch.mit.edu/projects/313147452

It has a costume called "MARTILLO" in its sprite called "MARTILLO" with the assed id of 076e270e6e98f5b3ccfea61635a89c6d.png that gives a 404 when loading from assets.

Adding that as a costume to the project json of the default project and uploading it causes it to not load.

[BryceLTaylor]

Here's another project: https://scratch.mit.edu/projects/265962121/

[BryceLTaylor]

More:
https://scratch.mit.edu/projects/311131656/
https://scratch.mit.edu/projects/307163499
https://scratch.mit.edu/projects/312775868/
https://scratch.mit.edu/projects/317027667/

[BryceLTaylor]

And more:
https://scratch.mit.edu/projects/304644540
https://scratch.mit.edu/projects/316778656
https://scratch.mit.edu/projects/317639263
https://scratch.mit.edu/projects/316035859
https://scratch.mit.edu/projects/313710414

This one: https://scratch.mit.edu/projects/288122559 came with a message: About online editor"
"I am sorry to give you your comments in Chinese, I hope I can get an understanding.
One of my projects, (website: https://scratch.mit.edu/projects/288122559/ I haven't posted yet, my password is: jiarui2007) because it loads a lot of sounds, so loading is slow, good morning. As a result, I accidentally closed the tab and couldn't load it at the end. I tried it for a long time, no. And other time periods can not be opened, only Saturday morning (Beijing time) is loaded successfully, I hope to be resolved as soon as possible.
In addition, I have a few small suggestions:
1, when loading the project, I hope to re-add the loading progress bar.
2, I hope to launch the cloud list function.
3. For some users who are blocked accounts, add some flags on their personal interface to indicate that they have been blocked."

[BryceLTaylor]

More:
https://scratch.mit.edu/projects/312117356
https://scratch.mit.edu/projects/282929981
https://scratch.mit.edu/projects/314551185

https://scratch.mit.edu/projects/318326404 from the forums: So, I was working on a MAP part yesterday, and I minimized google so i could eat dinner or something. I was gone for about 45 minutes, and when I came back one of those blue ‘Oops! something went wrong’ screens appeared. I didn't think anything of it, until it wouldn't go away after I re-loaded the page. That night, I tried to pull it up on my phone. Same results. It's still not working today, even after a looked up and tried a lot of solutions. Please help. I don't know if the URL will work since it's an unshared project, but here - https://scratch.mit.edu/projects/318326404/editor and I'm using Google Chrome

[BryceLTaylor]

More:
https://scratch.mit.edu/projects/265015957 (Paul: this one seems to work)
https://scratch.mit.edu/projects/282219172

[benjiwheeler]

@BryceLTaylor @paulkaplan @kchadha Is there any update on this issue?

[benjiwheeler]

This might be worth prioritizing!

[apple502j]

@benjiwheeler For the backspace, this regex should help: (?<!\\)(\\\\)*\\b
The problem is, negative lookbehind is not commonly supported!