AS3 Sorc Decompiler help

I am using AS3 Sorcerer and when I de-compile the client from realmofthemadgod/client I compare files I get this "import __AS3__.vec.Vector" in header of a lot of files. I compared to other sources of other people and I don't see this. What is causing this? How can I fix this so I can make my own compiling vanilla source. I would love some expert advice!

I think is also is part of the problem why I cant decompile and build a successful client from the official rotmg website. I Use Flex 4.6 AND Gravitir's Library. I would love some clean well thought out feedback. Thank you! Btw I get assets images with trillix because as3 sorc cant extract them

I am using AS3 Sorcerer and when I de-compile the client from realmofthemadgod/client I compare files I get this "import __AS3__.vec.Vector" in header of a lot of files. I compared to other sources of other people and I don't see this. What is causing this? How can I fix this so I can make my own compiling vanilla source. I would love some expert advice!

I think is also is part of the problem why I cant decompile and build a successful client from the official rotmg website. I Use Flex 4.6 AND Gravitir's Library. I would love some clean well thought out feedback. Thank you! Btw I get assets images with trillix because as3 sorc cant extract them . I just want to know how to properly decompile and BUILD the vanilla client without any error, I think its some kind of obfuscation or something? Can someone make a tutorial JUST for decompiling properly the vanilla client or any other without getting ten thousand errors. k, thanks.