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we have technology it didnt work [Music] that used to be me every single time i ran into a error until i realized just how easy it is to fix these errors so in this video im going to show you everything you need to know about course so you never have to run into these types of errors heres a quick example of a course error as you can see i just have a simple script file thats running on my client its accessing our server trying to get some data and its trying to print that data out and on our server you can see we have that data response were just using express to set up the server listening on port 3000 and as you can see when were trying to fetch from localhost 5500 to localhost 3000 its saying that we cannot fetch that because of course and its saying that no access control allow origin header is present on the requested resource and that tells you exactly what you need to do to fix cores in order to allow a request to go from one origin to another so for example localhos
