We are experiencing an issue since the JMIX 2.2 update with v.1.5 reports REST api where reports with entity parameters have stopped working. If we substitute them with String parameters (rendering a user unfriendly way for the JMIX Reports UI to do lookups) it works.
Here is an example of the error: “Internal server error: Required report parameter “par_business” not found” - this is now true for all the reports.
When run from the UI Reports menu, they all work.