point-based api request

[doug-leasure]

I get an error when I submit a point request to dev_server/v1/grid3/sample .

Here is the request:
$iso3
[1] "NGA"
$ver
[1] 1.2
$lat
[1] 6.22337
$lon
[1] 4.771174
$key
[1] "..."

Here is the error when I try to retrieve the result from dev_server/v1/tasks:
$status
[1] "finished"
$error
[1] TRUE
$error_message
[1] "No User Description for this type of error: ValueError"
$taskid
[1] "d59007a0-e6e6-525d-a120-a6a905c115a3"
$startTime
[1] "2019-11-19 19:00:20.811556"
$endTime
[1] "2019-11-19 19:00:21.044907"
$executionTime
[1] 1