Drupal Coding Standards Issues | phpcs

Problem/Motivation

Getting Following errors/warnings

$ phpcs --standard=Drupal twitter_filter

FILE: ...sers\Admin\Desktop\task\twitter_filter\src\Plugin\Filter\TwitterFilter.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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  1 | ERROR | [x] End of line character is invalid; expected "\n" but found
    |       |     "\r\n"
 46 | ERROR | [x] Use null coalesce operator instead of ternary operator.
 66 | 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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FILE: ...ers\Admin\Desktop\task\twitter_filter\tests\src\Unit\TwitterFilterTest.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------

Time: 434ms; Memory: 8MB

Proposed resolution

Fix the errors and warnings.