ID 467154 - [S] To Avid: Invalid path for blank asset should the DNxHD Converter fail

Problem summary
When needing to replace a clip in the AAF with the blank asset - due to a problem with converting the panel to DNxHD for example - Flix looks for the blank asset in a location which does not exist.

time="29 Jan 21 18:46 EST" level=error msg="could not run dnxhd-conv command" func="imaging.PNGToDNXHD:" Args="[create -c 1253 -i /flix6/flix_server_6.3.6_33/thirdparty/defaultassets/blank.png -o /tmp/Flix235591484/790716618/468925857

Customer reported version
Flix 6.3.6

Customer reported platform
CentOS7

Steps to reproduce

There are no specific repro steps to force the failure to convert the panel to DNxHD.

Expected behaviour
Flix should always look for the blank asset in the folder specific to the show's aspect ratio.

Actual behaviour
When looking for the blank asset during AAF generation, Flix looks for the blank file in flix_server_6.3.6_33/thirdparty/defaultassets/blank.png​ which doesn't exist since 6.3.5.

Reproduced by support

This bug has been reproduced in:
6.3.6 - CentOS 7 Server

6.3.5 - CentOS 7 Server

Unable to reproduce bug in:
6.3.4 - CentOS 7 Server

Earliest version tested
6.3.4 - This issue doesn't appear in this version and has regressed