Uncaught PHP_CodeSniffer_Exception

I’m getting errors when running this scan. It seems to be dropping slashes in paths to the theme it’s trying to scan. (Perhaps this plugin can’t run on Windows machines?)

[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: startScan: 
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: timeout: 60
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: lock: 1
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: scan status: 
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: Generating directory list.
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: 2 plugins left to process.
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: Processing: _dealer
[26-Nov-2018 21:41:32 UTC] WPE PHP Compatibility: Attempted scan count: 1
[26-Nov-2018 21:41:34 UTC] PHP Fatal error:  Uncaught PHP_CodeSniffer_Exception: Source file C:MAMPhtdocssandbox/wp-content/themes_dealer does not exist in C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\vendor\squizlabs\php_codesniffer\CodeSniffer.php:1740
Stack trace:
#0 C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\vendor\squizlabs\php_codesniffer\CodeSniffer.php(653): PHP_CodeSniffer->processFile('C:MAMPhtdocssan...', NULL)
#1 C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\vendor\squizlabs\php_codesniffer\CodeSniffer\CLI.php(998): PHP_CodeSniffer->processFiles(Array, false)
#2 C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\src\wpephpcompat.php(296): PHP_CodeSniffer_CLI->process(Array)
#3 C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\src\wpephpcompat.php(240): WPEPHPCompat->process_file('C:MAMPhtdocssan...')
#4 C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\wpengine-phpcompat.php(172): WPEPHPCompat->start_test()
#5 C:\MAMP\ht in C:\MAMP\htdocs\sandbox\wp-content\plugins\php-compatibility-checker\vendor\squizlabs\php_codesniffer\CodeSniffer.php on line 1740