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Do you have any idea what this error is when preparing the ERA5 reanalysis surface meteorological data (ERROR:‘NoneType’ object has no attribute ‘GetRasterBand’)?
I downloaded the ECMWF ERA5 file normally.
image 1549×840 174 KB What should be done?

Hello @abeddoughan ,
Deleting <user_directory>\ .snap\auxdata\gdal and restarting SNAP should fix your problem.
If it still doesn’t work, please attach the messages.log file (use “Help" → "Show Log Directory” menu to find the log).

a problem im facing is that I am pressing the aerodynamic roughness (not only this but other processes too) and the tab isnt opening.
image 1892×1036 66.6 KB

Any idea?

Checked with SNAP 9.0.6 and the latest SEN-ET version downloaded from https://www.esa-sen4et.org/static/media/Sen-ET-plugin-v1.0.1.4e8af722f165186a271f.zip .
The “Estimated aerodynamic roughness” window opens.

Is there any error in your log file?

image 1639×786 196 KB