Drupal Coding Standard Issue

$ phpcs --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml facebook_block/

FILE: C:\Users\SI-001\Downloads\facebook_block\src\Plugin\Block\FacebookBlock.php
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FOUND 5 ERRORS AND 2 WARNINGS AFFECTING 5 LINES
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7 | WARNING | [x] Unused use statement
8 | WARNING | [x] Unused use statement
8 | ERROR | [x] There must be one blank line after the last USE statement; 0 found;
82 | ERROR | [x] Concat operator must be surrounded by a single space
97 | ERROR | [x] Concat operator must be surrounded by a single space
98 | ERROR | [x] Concat operator must be surrounded by a single space
98 | ERROR | [x] Concat operator must be surrounded by a single space
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PHPCBF CAN FIX THE 7 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Time: 3.78 secs; Memory: 8MB