I tried all the other options metioned and none of them worked for me.
The solution for me was to reinstall laragon and to make it not happen again open the database (HeidiSQL) go to tools, user manager, chose user "root" and put a new password there and save it, then exit HeidiSQL, go to MENU (top left), then MySQL, change root password, in the first one you have to write the one that you just set in HeidiSQL and then you can change it to something else (yes, again).
If you dont change the password in the MENU it will ask you for a password that doesnt exist. And if you dont changed the password in HeidiSQL first it will say that the password is empty (?) so you can not change it in the MENU if you leave the first box blank.
After doing all this you have to use the last password that you set in the MENU everytime you acces the database.