Screenshot not visible in Flathub

Hi,
I recently update my app.

But the screenshot is not visible.
The metainfo file use the screenshot

kevinsmia1939/PySimpleCV/blob/main/data/io.github.kevinsmia1939.PySimpleCV.metainfo.xml

<?xml version="1.0" encoding="UTF-8"?>
<component type="desktop">
 <id>io.github.kevinsmia1939.PySimpleCV</id>
 <launchable type="desktop-id">io.github.kevinsmia1939.PySimpleCV.desktop</launchable>
 <metadata_license>CC0-1.0</metadata_license>
 <project_license>GPL-3.0-only</project_license>
 <name>PySimpleCV</name>
 <summary>Plot Cyclic voltammogram and battery cycling</summary>
 <description>
   <p>
     Graphical user interface for plotting the cyclic voltammogram and calculating jpa, jpc, and reversibility.
     PySimpleCV also plots battery cycles and calculates efficiencies. Written in pure Python.
     Currently supports VersaStudio (.par),.csv, and .txt.
     For.csv and.txt, the first column must be voltage and the second column is current.
     Battery cycling support .xls files with state (C_CC, D_CC, R) columns.
     Support copy-paste battery efficiency.
     Modules used: Numpy, Matplotlib, PySimpleGUI, and pandas
     License: GPLv3
   </p>
 </description>

This file has been truncated. show original

Anyone have any idea?
Thanks.