I have build a project on a windows 10 machine and now that it is allmost finshed I tried to deploy it on a ubuntu 20.04.2 server on a virtual machine. But now that I've got it working I keep getting Undefined variable errors (see below).
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I can't seem to find anything about this so I'm thinking it has to do with the differences between the windows file structure an the linux file structure. Could somebody confirm or deny that. And if so give me a possible solution?
Edit: