Changes for page Troubleshooting

Last modified by kindler on 2025/05/14 16:54
From version 39.1
edited by kindler
on 2022/03/21 17:22
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

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4 4  (% class="wikigeneratedid" %)
5 5  For more information on the Collaboratory, please seee the [[documentation of the EBRAINS Collaboratory environment>>https://wiki.ebrains.eu/bin/view/Collabs/the-collaboratory/]].
6 6  
7 +== Temporary problems ==
8 +
9 +Currently none known.
10 +
7 7  == Jupyter notebook environment ("Lab") related ==
8 8  
9 9  === Error message "Error in Authenticator.pre_spawn_start: ... 401: Unauthorized" ===
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33 33  [[image:1623846323177-898.png||height="287" width="350"]]
34 34  
35 35  
36 -=== Import error for hbp_service_client ===
40 +=== Error message: "Could not identify EBRAINS kernel " ===
37 37  
38 -The hbp_service_client was needed for the now not-existing-any-longer Collaboratory version 1. The import line can be deleted from scripts.
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.
39 39  
44 +[[image:1666184857320-440.png]]
40 40  
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" %)
52 +=== Import error for hbp_service_client ===
53 +
54 +The hbp_service_client was needed for the now not-existing-any-longer Collaboratory version 1. The import line can be deleted from scripts.
55 +
41 41  == BrainScaleS-2 specific ==
42 42  
43 43  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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92 92  
93 93  There are also some additional Python3 related changes in the brainscales_system_chain_test.py example. Please find a [[working example script>>https://lab.ch.ebrains.eu/user-redirect/lab/tree/shared/NMC%20Collab%20copy%20template/BrainScaleS/BrainScaleS_01_Chain.ipynb]] in our [[copy-template Drive>>https://wiki.ebrains.eu/bin/view/Collabs/nmc-collab-copy-template/Drive]] (for copying into users collabs).
94 94  
95 -==== ====
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