Problems opening the .gexf file(s)

[CodeSyncio]

Hello,
When i try to open the exported graph from spiderfoot (Export selected --> GEXF) in a program like gephi, i get the error:

failed to import <filename.gexf>: java.lang.NumberFormatException: For input string: "None"

How can i fix this issue / what programs should i use to open these files?

[bcoles]

SpiderFoot did not set a value for the color alpha channel. SpiderFoot uses the networkx library to generate gexf files. An update to this library made setting a value for the alpha channel a requirement.

This should be fixed in #1819.