I swear to the LMS gods that the following Python requests code was working just yesterday: import requests # Step 1: Tell Canvas you're going to upload a file filename = 'test.svg' folderPath = '/myFolder/test' size = os . path . getsize ( filename ) data = { 'name' : filename , 'size' : str ( size ) , 'content_type' : 'image/svg+xml' , 'parent_folder_path' : folderPath } response = requests . post ( filesURL , json = data , headers = headers ) response . raise_for_status ( ) response = response . json ( ) # Step 2: Upload the file files = list ( response [ 'upload_params' ] . items ( ) ) # Get all upload params file_content = open ( 'svg/' + filename , 'rb' ) . read ( ) # Read in file data files . append ( ( u 'file' , file_content ) ) # Add file data to payload response = requests . post ( response [ 'upload_url' ] , files = files ) response . raise_for_status ( ) id = str ( response . json ( ) [ 'id' ] ) However, in step 1, when I get the first response, it looks nothing like it used to or what's in the documentation: { 'file_param' : 'file' , 'progress' : None , 'upload_url' : 'https://inst-fs-iad-prod.inscloudgate.net/files?token= ' , 'upload_params' : { 'filename' : 'c02s04n02a.svg' , 'content_type' : 'image/svg+xml' } } The code produces the following error: 500 Server Error: Internal Server Error for url: https://inst-fs-iad-prod.inscloudgate.net/files?token= etc.> Am I missing something? Has a change of file repository occurred from AWS? Would appreciate some help! Thanks

Error 500 when uploading a file via API

I swear to the LMS gods that the following Python requests code was working just yesterday:

<SPAN class="keyword token">import</SPAN> requests<BR /><BR /><SPAN class="comment token"># Step 1: Tell Canvas you're going to upload a file</SPAN><BR /><BR />filename <SPAN class="operator token">=</SPAN> <SPAN class="string token">'test.svg'</SPAN><BR />folderPath <SPAN class="operator token">=</SPAN> <SPAN class="string token">'/myFolder/test'</SPAN><BR /><BR />size <SPAN class="operator token">=</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>getsize<SPAN class="punctuation token">(</SPAN>filename<SPAN class="punctuation token">)</SPAN><BR />data <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">{</SPAN> <SPAN class="string token">'name'</SPAN> <SPAN class="punctuation token">:</SPAN> filename<SPAN class="punctuation token">,</SPAN><BR />         <SPAN class="string token">'size'</SPAN> <SPAN class="punctuation token">:</SPAN> str<SPAN class="punctuation token">(</SPAN>size<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN><BR />         <SPAN class="string token">'content_type'</SPAN> <SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'image/svg+xml'</SPAN><SPAN class="punctuation token">,</SPAN><BR />         <SPAN class="string token">'parent_folder_path'</SPAN> <SPAN class="punctuation token">:</SPAN> folderPath <SPAN class="punctuation token">}</SPAN><BR /><BR />response <SPAN class="operator token">=</SPAN> requests<SPAN class="punctuation token">.</SPAN>post<SPAN class="punctuation token">(</SPAN>filesURL<SPAN class="punctuation token">,</SPAN> json<SPAN class="operator token">=</SPAN>data<SPAN class="punctuation token">,</SPAN> headers<SPAN class="operator token">=</SPAN>headers<SPAN class="punctuation token">)</SPAN><BR />response<SPAN class="punctuation token">.</SPAN>raise_for_status<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><BR />response <SPAN class="operator token">=</SPAN> response<SPAN class="punctuation token">.</SPAN>json<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><BR /><BR /><BR /><SPAN class="comment token"># Step 2: Upload the file</SPAN><BR /><BR />files <SPAN class="operator token">=</SPAN> list<SPAN class="punctuation token">(</SPAN>response<SPAN class="punctuation token">[</SPAN><SPAN class="string token">'upload_params'</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">.</SPAN>items<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>    <SPAN class="comment token"># Get all upload params</SPAN><BR />file_content <SPAN class="operator token">=</SPAN> open<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'svg/'</SPAN><SPAN class="operator token">+</SPAN>filename<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'rb'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>read<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>  <SPAN class="comment token"># Read in file data                                       </SPAN><BR />files<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>u<SPAN class="string token">'file'</SPAN><SPAN class="punctuation token">,</SPAN> file_content<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>              <SPAN class="comment token"># Add file data to payload</SPAN><BR />response <SPAN class="operator token">=</SPAN> requests<SPAN class="punctuation token">.</SPAN>post<SPAN class="punctuation token">(</SPAN>response<SPAN class="punctuation token">[</SPAN><SPAN class="string token">'upload_url'</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> files<SPAN class="operator token">=</SPAN>files<SPAN class="punctuation token">)</SPAN><BR />response<SPAN class="punctuation token">.</SPAN>raise_for_status<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><BR />id <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>response<SPAN class="punctuation token">.</SPAN>json<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">'id'</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

However, in step 1, when I get the first response, it looks nothing like it used to or what's in the documentation:

<SPAN class="punctuation token">{</SPAN><BR />    <SPAN class="string token">'file_param'</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'file'</SPAN><SPAN class="punctuation token">,</SPAN> <BR />    <SPAN class="string token">'progress'</SPAN><SPAN class="punctuation token">:</SPAN> None<SPAN class="punctuation token">,</SPAN> <BR />    <SPAN class="string token">'upload_url'</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'https://inst-fs-iad-prod.inscloudgate.net/files?token=<crazy long token>'</SPAN><SPAN class="punctuation token">,</SPAN> <BR />    <SPAN class="string token">'upload_params'</SPAN><SPAN class="punctuation token">:</SPAN> <BR />    <SPAN class="punctuation token">{</SPAN><BR />          <SPAN class="string token">'filename'</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'c02s04n02a.svg'</SPAN><SPAN class="punctuation token">,</SPAN> <BR />          <SPAN class="string token">'content_type'</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'image/svg+xml'</SPAN><BR />    <SPAN class="punctuation token">}</SPAN><BR /><SPAN class="punctuation token">}</SPAN><BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

The code produces the following error:

500 Server Error: Internal Server Error for url: <A href="https://inst-fs-iad-prod.inscloudgate.net/files?token=<blah" target="test_blank" rel="nofollow noopener noreferrer">https://inst-fs-iad-prod.inscloudgate.net/files?token=<blah</A> etc.><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

Am I missing something? Has a change of file repository occurred from AWS?

Would appreciate some help!

Thanks

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Accepted answers

unknown

I had the same errors, and found that a "filename" parameter which Requests adds to multipart/form-data parts was the problem.

To prevent Requests from adding this, the files argument for requests.post can be provided with tuples of values, giving None in the first position, so we have a list like [('Name', (None, 'value')), ('Name2', (None, 'value2'))].

So in the code sample in the original post, it might help changing line 21 to

files <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">(</SPAN>None<SPAN class="punctuation token">,</SPAN> val<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> key<SPAN class="punctuation token">,</SPAN> val <SPAN class="keyword token">in</SPAN> response<SPAN class="punctuation token">[</SPAN><SPAN class="string token">'upload_params'</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">.</SPAN>items<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="comment token"># Get all upload params</SPAN><BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

I figured this out from this Stackoverflow answer, so thanks to Martijn Pieters!

All comments

unknown

I'm having the same issue. Below is a transcript of the requests/responses:

02/07/19 12:41:06 - ExecutePostRequestWithResponse [ StringContent : System.Object ]
[ request.RequestUri ] = https:///api/v1/users/self/files
[ request.Content ] = {"name":"0771056.jpg","size":71912,"content_type":"image/jpeg","parent_folder_path":"profile pictures","on_duplicate":"overwrite","as_user_id":"1146"}
[ response.StatusCode ] = OK
[ response.ReasonPhrase ] = OK
[ response.Content ] = {"file_param":"file","progress":null,"upload_url":"https://inst-fs-iad-beta.inscloudgate.net/files?token=","upload_params":{"filename":"0771056.jpg","content_type":"image/jpeg"}}

02/07/19 12:41:11 - ExecutePostRequestWithResponse [ MultipartFormDataContent ]
[ request.RequestUri ] = https://inst-fs-iad-beta.inscloudgate.net/files?token=
[ request.Content ] = --49d2b870-1d97-4f67-994d-75bfb6dcb5f5
Content-Type: text/plain; charset=utf-8
Content-Disposition: form-data; name=filename

0771056.jpg
--49d2b870-1d97-4f67-994d-75bfb6dcb5f5
Content-Type: text/plain; charset=utf-8
Content-Disposition: form-data; name=content_type

image/jpeg
--49d2b870-1d97-4f67-994d-75bfb6dcb5f5
Content-Disposition: form-data; name=file

[ response.StatusCode ] = InternalServerError
[ response.ReasonPhrase ] = Internal Server Error
[ response.Content ] = {"error":"No file uploaded","sentryId":"708c005f324343c1993d5b2693feaf48"}

unknown

Note that when we were uploading to amazon it was working fine.

James

There was another person asking about 502 errors. We've had 3 SIS imports fail in the last 22 hours. Canvas says they're having trouble with uploads and that was fix was implemented at 12:56 MST (19:56 UTC) on February 7. I say that because they claimed the problem was fixed on February 6 by 4:12 MST. Hopefully this one truly resolves the issue.

Canvas Status - Some users are unable to upload files into Canvas

Canvas Status - A small amount of Canvas users are experiencing slower load times than normal

Here's the main Canvas Status Page. I check there first whenever some background task that was working fails for some reason.

unknown

I had the same errors, and found that a "filename" parameter which Requests adds to multipart/form-data parts was the problem.

So in the code sample in the original post, it might help changing line 21 to

files <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">(</SPAN>key<SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">(</SPAN>None<SPAN class="punctuation token">,</SPAN> val<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> key<SPAN class="punctuation token">,</SPAN> val <SPAN class="keyword token">in</SPAN> response<SPAN class="punctuation token">[</SPAN><SPAN class="string token">'upload_params'</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">.</SPAN>items<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="comment token"># Get all upload params</SPAN><BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

I figured this out from this Stackoverflow answer, so thanks to Martijn Pieters!

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