Hi,

This issues caused by your hosting use outdated PHP version.

Have two way to fixed it:

1/ Tell with your hosting provider update PHP version to higher version. It should be 5.4+ to compatible with all features of wordpress & a lot of plugin of wordpress now and in the future. ( Highly Recommend )

2/ Do following this steps here:

a) Install & activate plugin WPide

b) Go to admin page > WPide > and replace this code to this code:

\
new Penci_Soledad_Demo_Importer();

Best Regards,

PenciDesign