Data not showing up for particular time range

Hi All,

We have a report that gets data from a db. The table in the db contains value for each 5 minute interval and has upto 1 month old data.
When I plot it in Power BI desktop, I even get the plot as required.

But , when I publish it to my workspace. Data for the time range 5PM - 12AM is not being shown everyday (highlighted in the picture shown below).
The data for that time range gets auto populated after some days.

Can anyone let me know of the cause behind this.

Thanks.