Unable to open Coursera JupyterLab
I can no longer access Courser JupyterLab: https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/DL0321EN/DL0321EN-2-1-Data-Preparation-py-v1.0.ipynb for the course https://www.coursera.org/learn/ai-deep-learning-capstone/home/welcome.
The error I receive is
"502 Bad Gateway
The server returned an invalid or incomplete response."

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Engineer Useless commented
jupyter lab has connection problem
the message 'ERR_CONNECTION_TIMED_OUT' is occurred. (South Korea)
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Harshal commented
jupyterlab-6-labs-prod-jupyterlab-us-east-0.labs.cognitiveclass.ai’s server IP address could not be found.
this is the error i get
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Anonymous commented
Having trouble accessing the Jupiter notebook https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/DB0201EN/DB0201EN-Week4-2-2-PeerAssign-v5-py.ipynb
getting error message: Could not find path: labs/DB0201EN/DB0201EN-Week4-2-2-PeerAssign-v5-py.ipynb
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Shivam Thaploo commented
%20jupyterlab-5.labs.cognitiveclass.ai’s server IP address could not be found. this is a new one
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Arlette Bramblett commented
%20jupyterlab-2.labs.cognitiveclass.ai’s server IP address could not be found.
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Vincetta Baker commented
I am having the same issue with Jupyter labs https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/PY0101EN/PY0101EN-3-2-Loops.ipynb it will not open and I continue to get the 502 error.
Please fix. -
Beygan Sundaramurthy commented
JupyterLab doesn't work in Skills Network Lab
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Anonymous commented
Unable to load the Labs for IBM DA0101EN Analyzing Data with Python on edx. Please resolve the issue.
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Daphne Georgiou commented
any update on that?
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Kenneth Analla commented
Very frustrating... 504 Gateway Time-out. Please fix soon.
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Tanel Liiv commented
I also having the same problem.
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Scarlett Tam commented
I am having the same problem...
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Sharanya Govindan commented
I have the same issue! I have to finish my course before 21st else I have to pay again.
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Riley Devereaux commented
Having the error:
2020-03-13 06:17:41+00:00 [Warning] MountVolume.SetUp failed for volume "gluster" : mount failed: mount failed: exit status 1 Mounting command: systemd-run Mounting arguments: --description=Kubernetes transient mount for /var/data/kubelet/pods/963ba097-0dd4-4a66-a354-0542c527ee81/volumes/kubernetes.io~glusterfs/gluster --scope -- mount -t glusterfs -o auto_unmount,backup-volfile-servers=10.114.214.22:10.114.214.46:10.114.214.6:10.114.214.60:10.114.214.62:10.114.214.83:10.114.214.84:10.114.214.90:10.115.125.137:10.115.125.25:10.166.130.146:10.166.130.214:10.166.130.222:10.166.130.224:10.166.130.228:10.166.130.242:10.166.130.53:10.166.130.75:10.166.130.85:10.166.130.92,log-file=/var/data/kubelet/plugins/kubernetes.io/glusterfs/gluster/jupyterlab-rileydeverea-glusterfs.log,log-level=ERROR 10.166.130.224:gluster-production-storage/production/rileydeverea /var/data/kubelet/pods/963ba097-0dd4-4a66-a354-0542c527ee81/volumes/kubernetes.io~glusterfs/gluster Output: Running scope as unit: run-ra7b408b2a2654aaba4803f8b78187eb0.scope [2020-03-13 06:17:41.631814] E [glusterfsd.c:825:gf_remember_backup_volfile_server] 0-glusterfs: failed to set volfile server: File exists Mount failed. Please check the log file for more details. , the following error information was pulled from the glusterfs log to help diagnose this issue: [2020-03-13 06:17:41.763226] E [timer.c:34:gf_timer_call_after] (-->/usr/lib/x86_64-linux-gnu/glusterfs/6.8/xlator/protocol/client.so(+0x13d04) [0x7f63eb922d04] -->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_submit+0x629) [0x7f63f27e4ec9] -->/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(gf_timer_call_after+0x2f3) [0x7f63f2a45753] ) 0-timer: Either ctx is NULL or ctx cleanup started [Invalid argument] [2020-03-13 06:17:41.763359] E [timer.c:34:gf_timer_call_after] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(+0x12b6f) [0x7f63f27e8b6f] -->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(+0x12191) [0x7f63f27e8191] -->/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(gf_timer_call_after+0x2f3) [0x7f63f2a45753] ) 0-timer: Either ctx is NULL or ctx cleanup started [Invalid argument]
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Lucius Lu commented
I got the same issue
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Carlos Jimenez commented
Same problem, hope they fix this soon.
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Riley Schenck commented
I get this error code:
2020-03-12 03:18:10+00:00 [Normal] Successfully assigned jupyterhub-jupyterlab-4/jupyterlab-rileyschenck to 10.115.159.146
2020-03-12 03:18:10+00:00 [Warning] MountVolume.SetUp failed for volume "gluster" : mount failed: mount failed: exit status 1 Mounting command: systemd-run Mounting arguments: --description=Kubernetes transient mount for /var/data/kubelet/pods/c8dd38cf-3627-4e3c-a355-cefb383654a6/volumes/kubernetes.io~glusterfs/gluster --scope -- mount -t glusterfs -o auto_unmount,backup-volfile-servers=10.114.214.22:10.114.214.46:10.114.214.6:10.114.214.60:10.114.214.62:10.114.214.83:10.114.214.84:10.114.214.90:10.115.125.137:10.115.125.25:10.166.130.146:10.166.130.214:10.166.130.222:10.166.130.224:10.166.130.228:10.166.130.242:10.166.130.53:10.166.130.75:10.166.130.85:10.166.130.92,log-file=/var/data/kubelet/plugins/kubernetes.io/glusterfs/gluster/jupyterlab-rileyschenck-glusterfs.log,log-level=ERROR 10.114.214.84:gluster-production-storage/production/rileyschenck /var/data/kubelet/pods/c8dd38cf-3627-4e3c-a355-cefb383654a6/volumes/kubernetes.io~glusterfs/gluster Output: Running scope as unit: run-ra05cc6630a3c40c4b3f1ccb6816d2c9e.scope [2020-03-12 03:18:10.610689] E [glusterfsd.c:825:gf_remember_backup_volfile_server] 0-glusterfs: failed to set volfile server: File exists Mount failed. Please check the log file for more details. , the following error information was pulled from the glusterfs log to help diagnose this issue: [2020-03-12 03:18:10.705697] E [fuse-bridge.c:6271:notify] 0-fuse: Server authenication failed. Shutting down. [2020-03-12 03:18:10.706653] E [timer.c:34:gf_timer_call_after] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_start+0x39) [0x7fc649e75b09] -->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_reconnect+0xe7) [0x7fc649e75a67] -->/usr/lib/x86_64-linux-gnu/libglusterfs.so.0(gf_timer_call_after+0x2f3) [0x7fc64a0d7753] ) 0-timer: Either ctx is NULL or ctx cleanup started [Invalid argument] -
Ricardo Garcia Rosas commented
Same problem:
File Load Error for DV0101EN-3-4-1-Waffle-Charts-Word-Clouds-and-Regression-Plots-py-v2.0.ipynb
<html> <head><title>504 Gateway Time-out</title></head> <body> <center><h1>504 Gateway Time-out</h1></center> <hr><center>nginx</center> </body> </html> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> -
Noha Galal commented
I have the same problem. developer skills network opens the home page only but no notebook seems to work !!!
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Alexander commented
The same problem!