Issue with discontinued theme

The theme The Practice is discontinued and We are now getting an error when attempting to edit any of the pages on the site. I have reached out to the owner but they have moved on to a new project and will not offer any support.
I want to get the theme working before moving to a new theme as there is outdated information that needs to be changed in the short term. .

Thanks for any ideas as I’m stumped and not an expert coder.

Here is the error thrown:

An error of type E_ERROR was caused in line 168 of the file /home/allaccid/public_html/wp-content/themes/thepractice-parent/framework/core/INTERFACE.php. Error message: Uncaught Error: Function name must be a string in /home/allaccid/public_html/wp-content/themes/thepractice-parent/framework/core/INTERFACE.php:168

Stack trace:

#0 /home/allaccid/public_html/wp-content/themes/thepractice-parent/framework/core/INTERFACE.php(323): TF_INTERFACE->meta_box_row_template(Array)

#1 /home/allaccid/public_html/wp-content/themes/thepractice-parent/framework/core/INTERFACE.php(339): TF_INTERFACE->get_meta_box_options(‘page’)

#2 /home/allaccid/public_html/wp-includes/class-wp-hook.php(289): TF_INTERFACE->create_meta_box(‘page’)

#3 /home/allaccid/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(’’, Array)

#4 /home/allaccid/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)

#5 /home/allaccid/public_html/wp-admin/includes/meta-boxes.php(1562): do_action(‘add_meta_boxes’, ‘page’, Object(WP_Post))

#6 /home/allaccid/public_html/wp-admin/edit-form-blocks.php(383): register_and_do_post_meta_boxes(Object(WP_Post))

#7 /home/allaccid/public_html/wp-admin/post.php

Hi,

Contact with your purchase item author hope they will helped!

Thanks!

Thanks for your reply but I’m not sure what you are asking me to do? As I stated the theme is discontinued. I have already reached out to the author and he is no longer supporting the theme. I was hoping someone here with php/coding knowledge could tell me what the error means and how to fix it.

Thanks!