Still trying to fix this error. Import works perfectly on local environment. Also here is the debug.log file after the import fail:
[17-Jun-2019 11:19:14 UTC] PHP Notice: Undefined variable: result in /var/www/html/example.com/public_html/wp-content/themes/neve/vendor/codeinwp/ti-onboarding/includes/importers/helpers/wp-importer/parsers.php on line 59
[17-Jun-2019 11:19:14 UTC] PHP Notice: Undefined variable: result in /var/www/html/example.com/public_html/wp-content/themes/neve/vendor/codeinwp/ti-onboarding/includes/importers/helpers/wp-importer/parsers.php on line 64
[17-Jun-2019 11:19:14 UTC] PHP Warning: array_filter() expects parameter 1 to be array, null given in /var/www/html/example.com/public_html/wp-content/themes/neve/vendor/codeinwp/ti-onboarding/includes/importers/helpers/class-themeisle-ob-importer-alterator.php on line 142
[17-Jun-2019 11:19:14 UTC] PHP Warning: array_filter() expects parameter 1 to be array, null given in /var/www/html/example.com/public_html/wp-content/themes/neve/vendor/codeinwp/ti-onboarding/includes/importers/helpers/class-themeisle-ob-importer-alterator.php on line 108
[17-Jun-2019 11:19:14 UTC] PHP Warning: Invalid argument supplied for foreach() in /var/www/html/example.com/public_html/wp-content/themes/neve/vendor/codeinwp/ti-onboarding/includes/importers/helpers/wp-importer/class-themeisle-ob-wordpress-import.php on line 355