Im trying to setup private server Azerothcore but Start server. bat doesnt find Mysqald

It says Mysql/bin/mysqld.exe cant be found. But it is in the azerothcore file. I have found it but for whatever reason the start server.bat can't find it. I dont know what to do and i need help with this. I followed this video https://www.youtube.com/watch?v=-oBeNR3i4Vg got to the start server bat part and pressed 1 but mysql cant be found so i can't continue.