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This article introduces the relevant knowledge of "how to solve TCGAbiolinks error Error in value [[3L]] (cond)". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

When downloading TCGA data using TCGAbiolinks, there is sometimes an error of "Error in value [[3L]] (cond): GDC server down, try to use this package later".

This error generally does not occur unless there is a problem with GDC's website, and there are two ways to detect it:

1. Run the following command in R:

> GenomicDataCommons::status () Error in curl::curl_fetch_memory (url, handle = handle): SSL certificate problem: Invalid certificate chain

From the information returned, it is due to a problem with the certificate of the GDC website.

two。 Visit GDC's API site directly to view status information

Encounter such a problem, can only use the GDC page and data download tool for data download.

Solution:

Install the latest version of TCGAbiolinks:

# this is the end of installing devtools package install.packages ("devtools") devtools::install_github ("BioinformaticsFMRP/TCGAbiolinks") "how to solve TCGAbiolinks error Error in value [[3L]] (cond)". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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