Can't proceed admin login after installation

Good day. I need help installing AKAUNTING. I install it in private server using SOFTACULOUS installation. The installation was successful and when I need to log in using admin. I got an login error. I dont know what is it. and how to fix it. Please help me. im only new.

please see attached screenshot photo. this is error after i put my login details.

thank you in advance

attachment: login admin error

 

<p>Good day. I need help installing AKAUNTING. I install it in private server using SOFTACULOUS installation. The installation was successful and when I need to log in using admin. I got an login error. I dont know what is it. and how to fix it. Please help me. im only new.</p><br /> <p>please see attached screenshot photo. this is error after i put my login details.</p><br /> <p>thank you in advance</p><br /> <p>attachment: <a title="login admin error" href="https://www.dropbox.com/s/j2ynkcmxr777u0s/2017-12-07%20%283%29.png?dl=0" target="_blank">login admin error</a></p><br /> <p> </p><br /> <p><img src="https://www.dropbox.com/s/j2ynkcmxr777u0s/2017-12-07%20%283%29.png?dl=0" alt="log in admin error" /></p>

The error says that the system was not able to connect to the database. Please, make sure the database user has full access rights.

<p>The error says that the system was not able to connect to the database. Please, make sure the database user has full access rights.</p>