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Hello,
Thank you for your answer. I have been experiencing delays since the beginning of the week when making requests on cbioportal. Most of the time, I end up getting the error message that I initially sent you, sometimes it ends up working, but then I got errors when downloading .tsv mutation files (at least it seems really slow compared to the past weeks). I tried searching on cbioportal again today, adding “https://www.” at the beginning of the address, but without success. I have copied and pasted the error message I received today.
{"req":{"method":"POST","url":"//www.cbioportal.org/api/generic_assay_meta/fetch","data":"{\"molecularProfileIds\":[\"ov_tcga_pan_can_atlas_2018_methylation_hm27_hm450_merge\"]}","headers":{"accept":"application/json","content-type":"application/json"}},"xhr":{"_url":"//www.cbioportal.org/api/generic_assay_meta/fetch"},"text":"{\"timestamp\":1770221019876,\"status\":500,\"error\":\"Internal Server Error\",\"path\":\"/api/generic_assay_meta/fetch\"}","statusText":"","statusCode":500,"status":500,"statusType":5,"info":false,"ok":false,"redirect":false,"clientError":false,"serverError":true,"error":{"status":500,"method":"POST","url":"//www.cbioportal.org/api/generic_assay_meta/fetch"},"created":false,"accepted":false,"noContent":false,"badRequest":false,"unauthorized":false,"notAcceptable":false,"forbidden":false,"notFound":false,"unprocessableEntity":false,"headers":{"cache-control":"no-cache, no-store, max-age=0, must-revalidate","content-encoding":"gzip","content-type":"application/json","date":"Wed, 04 Feb 2026 16:03:39 GMT","elapsed-time":"0","expires":"0","pragma":"no-cache","strict-transport-security":"max-age=31536000; includeSubDomains","vary":"origin,access-control-request-method,access-control-request-headers,accept-encoding","x-content-type-options":"nosniff","x-frame-options":"DENY","x-xss-protection":"0"},"header":{"cache-control":"no-cache, no-store, max-age=0, must-revalidate","content-encoding":"gzip","content-type":"application/json","date":"Wed, 04 Feb 2026 16:03:39 GMT","elapsed-time":"0","expires":"0","pragma":"no-cache","strict-transport-security":"max-age=31536000; includeSubDomains","vary":"origin,access-control-request-method,access-control-request-headers,accept-encoding","x-content-type-options":"nosniff","x-frame-options":"DENY","x-xss-protection":"0"},"type":"application/json","links":{},"body":{"timestamp":1770221019876,"status":500,"error":"Internal Server Error","path":"/api/generic_assay_meta/fetch"},"url":"https://www.cbioportal.org/results/oncoprint?tab_index=tab_visualize&Action=Submit&session_id=69836d8c419e476a924992f6"}
When trying the link you sent me, I get this :

Thank you for your help
Have a nice day
Clémence
Dr Clémence MICHON
Biologiste médicale – Département de Biologie Médicale et Biologie des Essais Cliniques
Poste 28.97
De : Gaofei Zhao <zhaoga...@gmail.com>
Envoyé : mercredi 4 février 2026 16:57
À : Michon Clemence <Clemenc...@ico.unicancer.fr>
Cc : cbiop...@googlegroups.com
Objet : Re: [cbioportal] Error cbioportal
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