Error when importing product reviews

Hi, I keep getting the following errors when importing product reviews. Can you please help:

2024-09-28T12:17:10+00:00 Critical Uncaught TypeError: Cannot access offset of type string on string in /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/product_review/import/import.php:447  
Additional context
{
    "error": {
        "type": 1,
        "file": "/home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/product_review/import/import.php",
        "line": 447
    },
    "backtrace": [
        "",
        "#0 /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/product_review/import/import.php(92): Wt_Import_Export_For_Woo_Basic_Product_Review_Import->process_product_reviews(Array)",
        "#1 /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/product_review/product_review.php(98): Wt_Import_Export_For_Woo_Basic_Product_Review_Import->prepare_data_to_import(Array, Array, 0, false)",
        "#2 /home/fse/public_html/wp-includes/class-wp-hook.php(324): Wt_Import_Export_For_Woo_Basic_Product_Review->importer_do_import(Array, 'product_review', 'import', Array, Array, 'new', 0, false)",
        "#3 /home/fse/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array)",
        "#4 /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/import/import.php(1024): apply_filters('wt_iew_importer...', Array, 'product_review', 'import', Array, Array, 'new', 0, false)",
        "#5 /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/import/classes/class-import-ajax.php(438): Wt_Import_Export_For_Woo_Basic_Import->process_action(Array, 'import', 'product_review', 'temp_product_re...', 29, 0)",
        "#6 /home/fse/public_html/wp-content/plugins/product-import-export-for-woo/admin/modules/import/import.php(1163): Wt_Import_Export_For_Woo_Basic_Import_Ajax->import(Array)",
        "#7 /home/fse/public_html/wp-includes/class-wp-hook.php(324): Wt_Import_Export_For_Woo_Basic_Import->ajax_main('')",
        "#8 /home/fse/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)",
        "#9 /home/fse/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)",
        "#10 /home/fse/public_html/wp-admin/admin-ajax.php(192): do_action('wp_ajax_iew_imp...')",
        "#11 {main}",
        "thrown"
    ]
}