It looks like since the latest release these PHP warnings are being added into the markdown
Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in phar:///bin/swac/vendor/php-yaoi/php-yaoi/src/Cli/View/Text.php on line 23
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in phar:///bin/swac/vendor/swaggest/code-builder/src/TableRenderer.php on line 99
as well as
Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in phar:///bin/swac/src/Markdown/APIDoc.php on line 68
It looks like since the latest release these PHP warnings are being added into the markdown
as well as
is printed in the logs