Invalid exec engine function call

[FranSlot]

While testing the new deployment steps for RAP on Kubernetes, @hanjoosten found a bug (see Issue 310). The solution was to upgrade the prototype framework version for the images to a newer version (see PR 330). It was later found by @KlaasDijkstraOrdina and @Svroozendaal that this version causes a bug in the Docker deployment of RAP (see Issue 349). After testing around I found that starting version 1.13 this problem exists.

Attached below are the error messages as they appear in various versions.

Error-v13.txt
Error-v15.txt
Error-main.txt

[hanjoosten]

For what it is worth: The separator in the implode statement used to be optional, but that is depricated. See https://www.php.net/manual/en/function.implode.php

I am not sure about the php version we use at this moment.

[stefjoosten]

@Michiel-s thinks the error is in the call of the docker statement... (@Michiel-s can you elaborate a little?)
From Prototype Framework vs. 1.12 to 1.13, the PHP version changes from vs. 7 to 8. This may explain what happens.