Unable to initialize filter with initial scale

[MuhammadUsman90]

Hi,
I am trying to fuse IMU data with SVO/pose to estimate true scale. The frequency of svo is 50 hz and for IMU i also set it to 60hz. When i initialize the filter i get this error.

Wanted to insert a value to the sorted container at time 0.000000000 but the map already contained a value at this time. discarding.

There is no orientation difference between the two sensors. Any help will be greatly appreciated.