system ( com.Android google.com.gms ) share from gallery app suddenly stops working and crashes
Considering that the error seems to be that an icon can't be loaded I would assume the following:

The sharing menu shows a list of apps to share the selected content with. This list shows for each app it's app icon plus the app name.

It looks like one of the installed apps, that is shown in the sharing apps list, has a problem loading the app icon. Unfortunately the error log has no indicator which app icon fails to load. 

Unless you recently installed a system update the problem is caused by one specific app that has been installed or updated recently recently.

Note: The sharing list is AFAIK automatically generated by the content type to be shared. Each app contains in it's manifest rules and content types it can accept. Upon installation these information is AFAIR copied into a central system-wide XML file (don't remember the exact file name). Hence by modifying this file it would be possible to remove certain apps from the sharing menu, however this XML file is updated/modified if you install or update an app. Hence the manual changes may be overwritten frequently (I never tried this therefore I don't have any experience how long a modification can last in this XML file).