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Changes for page Troubleshooting

Last modified by kindler on 2025/05/14 16:54
From version 43.1
edited by kindler
on 2022/08/19 15:28
Change comment: There is no comment for this version
To version 47.1
edited by kindler
on 2022/10/19 15:10
Change comment: There is no comment for this version

Summary

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6 6  
7 7  == Temporary problems ==
8 8  
9 -=== August 2022: "504 Gateway Time-out" ===
9 +Currently none known.
10 10  
11 -The call to //client.list_resource_requests(repoInfo.nameInTheUrl)// in the batch-exmaple notebooks currently (19 August 2022) result in a "504 Gateway Time-out" error due to a problem in the back-end. As a workaround, please just skip the part by inserting a line with the content
12 -//if False~://
13 -before the line
14 -//a=client.list_resource_requests(repoInfo.nameInTheUrl)//
15 -in the example notebookinto and move that line an all the remaining lines  into that new if... brranch (select the a=client.... and all the remaining lines in the cell, then press the TAB key to increase the indent of the whole block of selected lines). This skips the pre-check for an existing quota (so, if a quota entry is missing the execution will fail later), but allows the notebook to run, if a quota entry is present (which is the usual case).
16 -
17 17  == Jupyter notebook environment ("Lab") related ==
18 18  
19 19  === Error message "Error in Authenticator.pre_spawn_start: ... 401: Unauthorized" ===
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43 43  [[image:1623846323177-898.png||height="287" width="350"]]
44 44  
45 45  
40 +=== Error message: "Could not identify EBRAINS kernel " ===
41 +
42 +If your notebook shows "RuntimeError: Could not identify EBRAINS kernel (probably too old version). Please select the appropriate kernel EBRAINS_experimental_release.": Please check, whether an EBRAINS kernel has been selected as kernel for the notebook execution.  In the example screenshot below the "Python 3 (ipykernel)" has been used, as shown in the upper right hand corner of the tab with the notebook.
43 +
44 +[[image:1666184857320-440.png]]
45 +
46 +
47 +Fix: click the current kernel name to get the kernel selection dialog box and select the "EBRAINS_experimental_release" kernel (blue highlight in the screenshot shown below):
48 +
49 +[[image:image-20221019150927-1.png]]
50 +
51 +(% class="wikigeneratedid" %)
46 46  === Import error for hbp_service_client ===
47 47  
48 48  The hbp_service_client was needed for the now not-existing-any-longer Collaboratory version 1. The import line can be deleted from scripts.
49 49  
50 -
51 51  == BrainScaleS-2 specific ==
52 52  
53 53  The [[BrainScaleS external user chat>>https://chat.bioai.eu/external-users/channels/town-square]] has service announcements (e.g. when a system is down due to maintenance) and is also a good place to ask general questions.
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