Server error (rq1, convert_tgt_chartadvice): is.list(x) is not TRUE # In call: # timedata(tgt)

This error occurs in JAMES 1.5.4 and earlier when JAMES cannot find the input data. The most typical causes are:

the request does not upload the data correctly
the URL points to the wrong session number
the session has expired (older than 30 minutes)

Replication

Data to upload

{"Format":"3.0","organisationCode":1234,"reference":"Maria","clientDetails":[{"bdsNumber":19,"value":"2"},{"bdsNumber":20,"value":"20181011"},{"bdsNumber":82,"value":189},{"bdsNumber":91,"value":"1"},{"bdsNumber":110,"value":990},{"bdsNumber":238,"value":1670},{"bdsNumber":240,"value":1900}],"clientMeasurements":[{"bdsNumber":235,"values":[{"date":"20181111","value":380},{"date":"20181211","value":435}]},{"bdsNumber":245,"values":[{"date":"20181011","value":990},{"date":"20181111","value":1250},{"date":"20181211","value":2100}]},{"bdsNumber":252,"values":[{"date":"20181111","value":270},{"date":"20181211","value":305}]}],"nestedDetails":[{"nestingBdsNumber":62,"nestingCode":"01","clientDetails":[{"bdsNumber":63,"value":"19950704"}]},{"nestingBdsNumber":62,"nestingCode":"02","clientDetails":[{"bdsNumber":63,"value":"19901202"}]}]}

# request_site_methods.R
#
# Issue 23okt2023, AS
# Server error (rq1, convert_tgt_chartadvice): is.list(x) is not TRUE
# In call:
#   timedata(tgt)

library(jamesclient)
fn <- path.expand("~/Package/james/notes/Voorbeelddossier.txt")
host <- "https://james.groeidiagrammen.nl"
js <- read_json_js(fn)

# Create site: upload/data and manually construct URL (OK)
# Method 1
r1 <- james_post(host = host, path = "data/upload/json", txt = js)
site_url1 <- file.path(host, paste0("site?session=", r1$session))
browseURL(site_url1)

# Create site: site/request, implicit upload, manually construct URL (errors)
# Method 2 (spawns data/upload session)
r2 <- james_post(host = host, path = "/site/request/json",
                 sitehost = host, txt = fn)
site_url2 <- file.path(host, paste0("site?session=", r2$session))
browseURL(site_url2)
# The problem is that r2$session points to the site/request session,
# not to the spawned data/upload session

# Correct way:
# Create site: by site/request with implicit upload (OK)
# The return value points to the spawned data/uploaded session
browseURL(r2$parsed)

# Create site: site/request, using session input from data/upload (OK)
# Method 3 (evades manual URL construction)
r3 <- james_post(host = host, path = "/site/request/json",
                 sitehost = host, session = r1$session)
browseURL(r3$parsed)

Conclusions:

The pop-up "Server error ..." is a rough edge, and needs to be handled more elegantly;
Spawning to data/upload (method 2) does not support manual URL construction.

growthcharts / james

Server error (rq1, convert_tgt_chartadvice): is.list(x) is not TRUE # In call: # timedata(tgt) #19