Uncaught Error: Cannot access property started with ‘\0’ in

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 5.3.2
Current theme: Blue Sky Creative (version )
Current plugin: Search & Replace (version 3.2.1)
PHP version 7.2.28

Error Details
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An error of type E_ERROR was caused in line 355 of the file /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php. Error message: Uncaught Error: Cannot access property started with ‘\0’ in /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php:355
Stack trace:
#0 /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(341): Inpsyde\SearchReplace\Database\Replace->recursive_unserialize_replace(‘https://193.33.1…’, ‘https://vistra.e…’, Object(stdClass), false)
#1 /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(222): Inpsyde\SearchReplace\Database\Replace->recursive_unserialize_replace(‘https://193.33.1…’, ‘https://vistra.e…’, ‘O:8:”stdClass”:…’)
#2 /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(93): Inpsyde\SearchReplace\Database\Replace->replace_values(‘https://193.33.1…’, ‘https://vistra.e…’, ‘vistra_actionsc…’, NULL)
#3 /home/vistraea/public_html/wp-content/plugins/search-and-replace/inc/Page/SearchReplace.php(214): Inpsyde\SearchReplace\Database\Replace->run_search_replace