Failed to load resource net ERR CONTENT LENGTH MISMATCH

Question

What does this error message mean and how do I resolve it  That is from console of Google Chrome v33 0  on Windows 7      Failed to load resource  net  ERR CONTENT LENGTH MISMATCH  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp http   and img url here png   I m trying to change the images  src attribute using jQuery  For example like this  simplified        image-prld   attr  src   someDynamicValue     There are about 30 images on the page  And the above error is happening for random images every time when I reload the page  But sometimes it is working well for all the images  without any error   When this error happens  the particular image is displaying like this     However  when I open the link next to the error message on a new tab  the image is loading  which says me logically that the images is valid and it exists

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In my case it was a proxy issue  requests proxied from nginx to a varnish cache  that caused the issue  I needed to add the following to my proxy definition          proxy set header Connection keep-alive      I found the answer here  https   stackoverflow com a 55341260 1062129

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In my case I was modifying the request to append a header  using Fiddler  to an https request  but I did not configure it to decrypt https traffic  You can export a manually-created certificate from Fiddler  so you can trust import the certificate by your browsers  See above link for details  some steps include   Click Tools  gt  Fiddler Options  Click the HTTPS tab  Ensure the Decrypt HTTPS traffic checkbox is checked  Click the Export Fiddler Root Certificate to Desktop button

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If anyone struggle with that problem using docker   nginx  it could be permissions  Nginx logs shown error   2019 12 16 08 54 58  crit  6 6   23 open     var tmp nginx fastcgi 4 00 0000000004  failed  13  Permission denied  while reading upstream  client  172 24 0 2  server  test loc  request   GET  login HTTP 1 1   upstream   fastcgi   172 28 0 2 9001   host   test loc    Run inside nginx container path might vary    chown -R www-data www-data  var tmp nginx

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If this is related to docker  try stopping the erroneous container and starting a new container using docker run command from the same image

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In my case I was miscalculating the Content-Length that I advertised in the header  I was serving Range-Requests for files and I mistakenly published the filesize in Content-Length   I fixed the problem by setting Content-Length to the actual range that I was sending back to the browser   So in case I am answering to a normal request I set the Content-Length to the filesize  In case I am answering to a range-request I set the Content-Length to the actualy length of the requested range

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This can be caused by a full disk  Ubuntu Nginx     My situation     this error occured in Chrome with Nginx serving a static file       static js vendor c4ed7962fb4a63ad3c3b js net  ERR CONTENT LENGTH MISMATCH 200  OK   root disk was full  after cleaning tmp files the error disappeared  to prevent  make sure your disk remains clean   a script such as this could help https   crunchify com how-to-automatically-delete-tmp-folders-in-linux-automatic-disk-log-cleanup-bash-script

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It could be even caused by your ad blocker    Try to disable it or adding an exception for the domain from which the images come from

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Docker   NGINX  In my situation  the problem was nginx docker container disk space  I had 10GB of logs and when I reduce this amount it works   Step by step  for rookies newbies    Enter in your container  docker exec -it  lt container id gt  bash Go to your logs  for example  cd  var log nginx   optional  Show file size  ls -lh for individual file size or du -h for folder size  Empty file s  with  gt  file name  It works     For advanced developers sysadmins  Empty your nginx log with  gt  file name or similar   Hope it helps

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This error is definite mismatch between the data that is advertised in the HTTP Headers and the data transferred over the wire   It could come from the following    Server  If a server has a bug with certain modules that changes the content but don t update the content-length in the header or just doesn t work properly  It was the case for the Node HTTP Proxy at some point  see here  Proxy  Any proxy between you and your server could be modifying the request and not update the content-length header     As far as I know  I haven t see those problem in IIS but mostly with custom written code   Let me know if that helps

[javascript] Failed to load resource: net::ERR_CONTENT_LENGTH_MISMATCH

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