Those logs indicate that, for some reason, the relevant file fails to load:
WASM: Module path is D:\WpSystem\S-1-5-21-1109718618-3332558475-4158177205-1001\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\Packages\Community\inibuilds-aircraft-a350\SimObjects\Airplanes\inibuilds-aircraft-a350-900\panel\inibuilds_a350_datastore.wasm
WASM: ERR_FATAL_FILE_ERROR (-239 / ffffff11)
Also, that log indicates that you have moved your AppData directory, which is.. a bit unusual and known to cause headaches 
Also, is it possible that your Windows username contains special characters?
Here is a relevant support topic on the MSFS forums:
So this seems to be out of our control, unfortunately. It is supposedly fixed in WU5?
In addition to the above, we can also tell from the logs that you have the Charts and SimBrief panels installed. These ship with the same file, and they are being loaded correctly. Only the A350 version fails for some reason.
Could you try replacing the file mentioned in the logs? It should be located at:
Community\inibuilds-aircraft-a350\SimObjects\Airplanes\inibuilds-aircraft-a350-900\panel\inibuilds_a350_datastore.wasm
Please replace it with this version:
inibuilds_a350_datastore.wasm (183.2 KB)