2 Updated code
source | link

Try this :

<a href="<?php echo bloginfohome_url( 'home' ) . '/author/' . get_the_author_meta( 'user_login', wp_get_current_user()->ID ); ?>" >My personal page</a>

Try this :

<a href="<?php echo bloginfo( 'home' ) . '/author/' . get_the_author_meta( 'user_login', wp_get_current_user()->ID ); ?>" >My personal page</a>

Try this :

<a href="<?php echo home_url() . '/author/' . get_the_author_meta( 'user_login', wp_get_current_user()->ID ); ?>" >My personal page</a>
1
source | link

Try this :

<a href="<?php echo bloginfo( 'home' ) . '/author/' . get_the_author_meta( 'user_login', wp_get_current_user()->ID ); ?>" >My personal page</a>