Can't add expense

Informed @thde about the group id. I'm unable to create the following expense.

[thde]

confirmed

Host: api.teiler.io
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:58.0) Gecko/20100101 Firefox/58.0
Accept: application/json, text/plain, */*
Accept-Language: en,de;q=0.7,en-US;q=0.3
Accept-Encoding: gzip, deflate, br
Referer: https://web.teiler.io/groups/xxx/expenses/create?payerId=null
content-type: application/json
Content-Length: x
Origin: https://web.teiler.io
Connection: keep-alive

{"title":"Test","amount":5000,"payer":{"id":1},"profiteers":[{"person":{"id":1},"share":0},{"person":{"id":2},"share":2500},{"person":{"id":3},"share":0},{"person":{"id":5},"share":0},{"person":{"id":4},"share":2500}]}

Returns an 500 error code. A workaround seems to be to just disable (click on person) the persons with no share.

[McDonnough]

An exception of type ValueLessThanOrEqualToZeroException is thrown internally if a profiteer with a share of 0 is passed to the server, but it is never translated into an HTTP-error (406 as per specification).
The corresponding piece of code is missing both in CompensationEndpointController and ExpenseEndpointController.

[lroellin]

As @McDonnough just found out, this error is also not found in the error to error-message mapping in https://github.com/teiler/web.teiler.io