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140 results found

  1. Getting 500 internal server error

    7 votes
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    0 comments  ·  General  ·  Admin →
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  2. Unable to access Jupyter notebook in Cognitive labs examples from Coursera https://labs.cognitiveclass.ai/login/lti_actual

    I am getting Internal server 500.

    Please Help

    139 votes
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    48 comments  ·  General  ·  Admin →
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  3. Hello, I am getting :- negative length vectors are not allowed While working on Jupyter R labs.cognitiveclass.ai(Cognitive lab Coursera))

    While I trying to retrieve data from database IBM Cloud using the below

    query = "SELECT COUNT(FDID) FROM FARMPRICES"
    sqlQuery(conn,query)

    I am getting following error:

    Error in odbcFetchRows(channel, max = max, buffsize = buffsize, nullstring = nullstring, : negative length vectors are not allowed
    Traceback:

    1. sqlQuery(conn, query)
    2. sqlGetResults(channel, errors = errors, ...)
    3. odbcFetchRows(channel, max = max, buffsize = buffsize, nullstring = nullstring, . believeNRows = believeNRows)
    4 votes
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    2 comments  ·  R  ·  Admin →
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  4. banned in error

    Hello,
    I was working on the Network Labs of Unit 3 of the course "Data Visualization with Python", when it stopped running the code. After restart the kernel, and later the site, a message appeareared telling me that I've been banned for "inappropriate activity".
    As I was acting properly, I would presume that a bug, mistake or connection issue had made this happen, so I'll ask you if can fix this.
    Thank you very much, I would like to keep learning this way :)

    The message says "If you think you have been banned in error, please open a support…

    15 votes
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    1 comment  ·  Python  ·  Admin →
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  5. Unable to "Open Tool", Start Lab Environment to open Jupyter Notebook - Databases and SQL for Data Science with Python

    I am currently unable to load the Jupyter Notebook. When I click on the "Open Tool" button for the Peer-Reviewed Assignment on week 5, it brings me to a page with "Please wait while we prepare to start your lab environment." and a loading circle. It loads for very long (might have been more than an hour) and does not come up with an error message. I have tried using different browsers, cleared my cookies, used incognito mode, and changed my internet connection. It still does not work. Please help. Thank you.

    38 votes
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    3 comments  ·  Admin →
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  6. Databases and SQL for Data Science - Week 5 - I cannot proceed with the exercises - AttributeError

    18-04-2021
    (for several days JupyterLab on skills network labs has serious connection problems)

    I was using this db quietly until a few days ago, I thought of a syntax error but everything seems ok to me. I am correctly connected to the DB but I cannot proceed with the exercises because I get this error message

    'DB2ExecutionContextibmdb' object has no attribute 'compiled_parameters'

    please, can you help me?

    5 votes
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    1 comment  ·  DB2, dashDB  ·  Admin →
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  7. Databases and SQL for Data Science - Week 4 lab not connecting

    Lab:

    https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/DB0201EN/DB0201EN-Week4-2-2-PeerAssign-v5-py.ipynb?lti=true

    Error Message: (ibmdbdbi.DatabaseError) ibmdbdbi::DatabaseError: [IBM][CLI Driver] CLI0124E Invalid argument value. SQLSTATE=HY009 SQLCODE=-99999
    (Background on this error at: http://sqlalche.me/e/13/4xp6)
    Connection info needed in SQLAlchemy format, example:
    postgresql://username:password@hostname/dbname
    or an existing connection: dict_keys([])

    I have downloaded ibm_db, python, odbc, nothing I have tried works. I even tried attached steps in discussion forum. Please assist, so that I can submit assignment

    4 votes
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    1 comment  ·  DB2, dashDB  ·  Admin →
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  8. Databases and SQL for Data Science - Week 4 lab not connecting

    Lab:

    https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/DB0201EN/DB0201EN-Week4-2-2-PeerAssign-v5-py.ipynb?lti=true

    Error Message: (ibmdbdbi.DatabaseError) ibmdbdbi::DatabaseError: [IBM][CLI Driver] CLI0124E Invalid argument value. SQLSTATE=HY009 SQLCODE=-99999
    (Background on this error at: http://sqlalche.me/e/13/4xp6)
    Connection info needed in SQLAlchemy format, example:
    postgresql://username:password@hostname/dbname
    or an existing connection: dict_keys([])

    I have downloaded ibm_db, python, odbc, nothing I have tried works. I even tried attached steps in discussion forum. Please assist, so that I can submit assignment

    1 vote
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    0 comments  ·  DB2, dashDB  ·  Admin →
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  9. unable to open datasets

    I am unable to open the datasets in this link.
    https://labs.cognitiveclass.ai/tools/jupyterlab/lab/tree/labs/DB0201EN/DB0201EN-Week4-1-1-RealDataPractice-v4-py.ipynb?lti=true

    CENSUS_DATA: Census Dataset

    CHICAGOPUBLICSCHOOLS Chicago Public School

    CHICAGOCRIMEDATA: Chicago Crime Data
    I need to be able to download the datasets in these links but it gives an error.

    1 vote
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    0 comments  ·  Python  ·  Admin →
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  10. Can any one tell me how to submit my notebook as it shows this dialogue first and then it is stuck on the same page when i click SUBMIT.

    Anyone pls suggest, i am not able to submit my first notebook.

    7 votes
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    1 comment  ·  Python  ·  Admin →
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  11. Error in PY0101EN-5.2_API Lab

    I obtained an API key and URL for the lab. I am getting these errors:

    1 vote
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    0 comments  ·  Python  ·  Admin →
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  12. Unable to open coursera lab notebooks

    Since this morning, I was not able to open any of the lab notebook for the Python for Data Science and AI course on Coursera.

    10 votes
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    0 comments  ·  Python  ·  Admin →
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  13. Update conda please.

    When I install packages, I receive the following note:

    ==> WARNING: A newer version of conda exists. <==

    current version: 4.8.3

    latest version: 4.8.4

    Please update conda by running

    $ conda update -n base -c defaults conda

    Without the update, invoking the .head() method causes an error

    AttributeError: 'NoneType' object has no attribute 'items'

    However, print(df.head()) does output a header.

    2 votes
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    0 comments  ·  Admin →
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  14. unable to open notebook as saying i am trying to close an unsaved notbook

    i am doing a Python for Data Science course on edX and cannot open one of the notebooks as I keep getting "File "PY0101EN-1.3notebookquizzStringOperations.ipynb" has unsaved changes, close without saving?"

    no matter if I press OK or Cancel, i still cannot open it and continue with my study. I have tried clearing cache and rebooting the machine. Tried closing unsaved and re-opening, still says i have an unsaved notebook that i am trying to close. Stuck here, any ideas?

    1 vote
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    0 comments  ·  Admin →
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  15. Unable to open Jupyter notebooks from Edx

    I'm unable to start lab from edx and getting the error page.
    Attached is the page for reference.

    7 votes
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  16. Unable to open Jupyter notebooks on Watson Studio in the Coursera Courses...

    Everything was working fine until yesterday(9 June 2020), Suddenly on 10 June, I lost access to jupyter notebooks on Skills Network Lab with "500 Internal Server Error". Fix this ASPA I'm losing my time.

    3 votes
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    0 comments  ·  Python  ·  Admin →
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  17. 500 Internal Server Error Cici Mud Sorry, something went wrong. Please try again. If this does not work please open a support ticket.

    Unable to open Skills Network Labs. I get the following error message. I've tried logging off and reloading the site several times but with no luck. I get the following error message: 500 Internal Server Error Cici Mud Sorry, something went wrong. Please try again. If this does not work please open a support ticket.

    7 votes
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    2 comments  ·  Admin →
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  18. A brilliant platform! Can't think of a way of improving it right now.

    1 vote
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  19. Python 3 not available in JupyterLab, need it for my course assignment. Help please!

    I need to use Python 3 for a Coursera lab, my JupyterLab only has Python, despite the Coursera Tutorial showing Python 3 available...

    1 vote
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    0 comments  ·  Python  ·  Admin →
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  20. Jupyter Labs doesn't work while i'm paying for everyday to Coursera

    Jupyter Labs doesn't work! Coursera charges me for everyday.

    4 votes
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