No 'Access-Control-Allow-Origin' header is present

in order to get phpmyadmin to open i had to change
http://localhost:8100 to http://localhost:10080
but when i set up the connection php/mysql it is still using http://localhost:8100 and now I am getting this error :

Failed to load http://localhost/ionc-php-mysql/manage-data.php: No 'Access-Control-Allow-Origin' header is 
present on the requested resource. Origin 'http://localhost:8100' is therefore not allowed access. The 
response had HTTP status code 404.

How do I fix this ?? please help

Use this plugin in chrome browser, Allow-Control-Allow-Origin:

Thank that worked but apparently now i have another error

404 -> not Found
check you url

I can’t find any mistake in it!!


do you forget a port in your url?
allredy tried to access your url in a browser?