Incorrect handling of extra GET parameters

[lwalejko]

When there are GET parameters used that are not expected by the app, it returns Internal Server Error instead of Bad Request

<error/rlang_error>
unbiased-1  | Error in `z()`:
unbiased-1  | ! unused arguments (determinism = 0.85, character = 1, type = "sd")
unbiased-1  | ---
unbiased-1  | Backtrace:
unbiased-1  |   1. unbiased:::run_unbiased()
unbiased-1  |  69. unbiased (local) `<fn>`(...)
unbiased-1  |  70. base::withCallingHandlers(z(...), error = rlang::entrace)
unbiased-1  |        at unbiased/R/error-handling.R:63:5
unbiased-1  | Expected public_key, host and project_id to be present but can't find public_key, host, project_id.
unbiased-1  | <error/rlang_error>
unbiased-1  | Error in `audit_log$validate_log()`:
unbiased-1  | ! Event type not set for audit log. Please set the event type using `audit_log_event_type`
unbiased-1  | ---
unbiased-1  | Backtrace:
unbiased-1  |   1. unbiased:::run_unbiased()
unbiased-1  |   8. httpuv (local) `<fn>`(`<env>`, `<externalptr>`)
unbiased-1  |   9. httpuv:::rookCall(private$app$call, req, req$.bodyData, seek(req$.bodyData))
unbiased-1  |  14. httpuv (local) compute()
unbiased-1  |  15. plumber (local) func(req)
unbiased-1  |  16. self$serve(req, res)
unbiased-1  |  17. plumber:::runSteps(...)
unbiased-1  |  18. plumber:::runStepsUntil(...)
unbiased-1  |  23. plumber (local) runStep()
unbiased-1  |  24. plumber (local) nextStep(x)
unbiased-1  |  25. plumber:::runSteps(...)
unbiased-1  |  26. plumber:::runStepsUntil(...)
unbiased-1  |  31. plumber (local) runStep()
unbiased-1  |  32. plumber (local) nextStep(x)
unbiased-1  |  33. private$runHooks(...)
unbiased-1  |  34. plumber:::runSteps(...)
unbiased-1  |  35. plumber:::runStepsUntil(...)
unbiased-1  |  40. plumber (local) runStep()
unbiased-1  |  41. plumber (local) nextStep(x)
unbiased-1  |  43. unbiased (local) `<fn>`(req = `<env>`, res = `<PlmbrRsp>`)
unbiased-1  |  46. audit_log$validate_log()
unbiased-1  |        at unbiased/R/audit-trail.R:163:9
unbiased-1  | Expected public_key, host and project_id to be present but can't find public_key, host, project_id.
unbiased-1  | Error in run_now(check_time, all = FALSE) :
unbiased-1  |   Not compatible with requested type: [type=list; target=raw].
unbiased-1  | Calls: <Anonymous> -> invokeCppCallback

Example to reproduce issue:

import requests
import json

url = "http://127.0.0.1:3838/study/minimisation_pocock"
params = {
    "determinism": 0.85,
    "character": 1,
    "type": "sd"
}

payload = {
    "identifier": "CSN",
    "name": "Clinical Study Name",
    "method": "range",
    "p": 0.85,
    "arms": {
        "placebo": 1,
        "active": 1
    },
    "covariates": {
        "sex": {
            "weight": 1,
            "levels": [
                "female",
                "male"
            ]
        },
        "weight": {
            "weight": 1,
            "levels": [
                "up to 60kg",
                "61-80 kg",
                "81 kg or more"
            ]
        }
    }
}

response = requests.post(url, params=params, json=payload)

print(f"Status Code: {response.status_code}")
print(f"Content: {response.text}")

Will print

Status Code: 500
Content: An exception occurred.