MB5L REPORT ERROR- SAP FI-MM QUERY

Hello connections,

In MB5L report error occure after April'19. Here attached file in which,upto March'19 report is ok. but after April'19 this error occure in May'19 and Jun'19. and onwards it will be occure continue. So this gap is occure from April'19.

Give proper solution for this error. which process and which transaction have to check for this error.

Material valuation class/valuation type is affected or not in this case because this error comes for particular FG and SFG material. and also any price change process is affected or not in this case?

Give suggestions!!

Thanks advance