fixing of 404 and 405 errors from my project

Framework Used: Spring language : Java,JSPand SQL What is the system about: The project is very simple it is basically a pay role management. We have two roles in it: • Admin: he will make employees salary, he will also be able to see employees salary by searching the [login to view URL] calculations should also be made by the project automatically according to the grade(designation) as in the tax should be added to the salary. • Employee: he will be able to see his salary Problem: The issue is that I have written almost 80 percent of the code. I get error of 404 and 405 when I login and cant calculate the total grade respective to their salary. every grade has a percentage of tax its your choice how you grade it and tax it. Grading is mentioned in data base with the name of "employeerole" This should not take more than an hour for a Pro Java Developer. I need it within hours after I have awarded the Project. Write "JAVA Rocks" if you have read my description fully. Happy Bidding. Files will be given to the winning bidder. project budget is STRICTLY 15 to 20 $