Drupal Coding Standard Issue

$ phpcs --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml vbo_export/
Xdebug: [Step Debug] Time-out connecting to debugging client, waited: 200 ms. Tried: localhost:9000 (through xdebug.client_host/xdebug.client_port) :-(

FILE: C:\Users\SI-001\Downloads\vbo_export\src\Plugin\Action\VboExportBase.php
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FOUND 4 ERRORS AFFECTING 4 LINES
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114 | ERROR | [x] Use null coalesce operator instead of ternary operator.
120 | ERROR | [x] Use null coalesce operator instead of ternary operator.
150 | ERROR | [x] Use null coalesce operator instead of ternary operator.
156 | ERROR | [x] Use null coalesce operator instead of ternary operator.
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PHPCBF CAN FIX THE 4 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: C:\Users\SI-001\Downloads\vbo_export\src\Plugin\Action\VboExportCsv.php
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FOUND 1 ERROR AFFECTING 1 LINE
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35 | ERROR | [x] Use null coalesce operator instead of ternary operator.
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: C:\Users\SI-001\Downloads\vbo_export\src\Plugin\Action\VboExportPdf.php
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FOUND 4 ERRORS AFFECTING 4 LINES
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15 | ERROR | [x] There must be one blank line after the last USE statement; 0 found;
31 | ERROR | [ ] Missing @var tag in member variable comment
81 | ERROR | [x] Use null coalesce operator instead of ternary operator.
90 | ERROR | [x] Use null coalesce operator instead of ternary operator.
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PHPCBF CAN FIX THE 3 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Time: 513ms; Memory: 10MB