Composer error. Unable to continue.

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--- Commands Executed ---
sudo -u www-data /usr/local/bin/composer config -g discard-changes true
sudo -u www-data /usr/local/bin/composer install --prefer-dist --no-suggest --no-interaction --no-progress --working-dir /var/www/html
Return Code: 2
--- Output ---

--- Errors ---
> Drupal\Composer\Composer::ensureComposerVersion
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for doctrine/annotations v1.4.0 -> satisfiable by doctrine/annotations[v1.4.0].
    - doctrine/annotations v1.4.0 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 2
    - Installation request for doctrine/collections v1.4.0 -> satisfiable by doctrine/collections[v1.4.0].
    - doctrine/collections v1.4.0 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 3
    - Installation request for doctrine/common v2.7.3 -> satisfiable by doctrine/common[v2.7.3].
    - doctrine/common v2.7.3 requires php ~5.6|~7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 4
    - Installation request for doctrine/inflector v1.2.0 -> satisfiable by doctrine/inflector[v1.2.0].
    - doctrine/inflector v1.2.0 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 5
    - Installation request for drupal/core 8.9.11 -> satisfiable by drupal/core[8.9.11].
    - drupal/core 8.9.11 requires php ^7.0.8 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 6
    - Installation request for drupal/core-project-message 8.9.11 -> satisfiable by drupal/core-project-message[8.9.11].
    - drupal/core-project-message 8.9.11 requires php >=7.0.8 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 7
    - Installation request for drupal/core-vendor-hardening 8.9.11 -> satisfiable by drupal/core-vendor-hardening[8.9.11].
    - drupal/core-vendor-hardening 8.9.11 requires php >=7.0.8 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 8
    - Installation request for laminas/laminas-diactoros 1.8.7p2 -> satisfiable by laminas/laminas-diactoros[1.8.7p2].
    - laminas/laminas-diactoros 1.8.7p2 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 9
    - Installation request for laminas/laminas-escaper 2.6.1 -> satisfiable by laminas/laminas-escaper[2.6.1].
    - laminas/laminas-escaper 2.6.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 10
    - Installation request for laminas/laminas-feed 2.12.2 -> satisfiable by laminas/laminas-feed[2.12.2].
    - laminas/laminas-feed 2.12.2 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 11
    - Installation request for laminas/laminas-stdlib 3.2.1 -> satisfiable by laminas/laminas-stdlib[3.2.1].
    - laminas/laminas-stdlib 3.2.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 12
    - Installation request for laminas/laminas-zendframework-bridge 1.0.4 -> satisfiable by laminas/laminas-zendframework-bridge[1.0.4].
    - laminas/laminas-zendframework-bridge 1.0.4 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 13
    - Installation request for paragonie/random_compat v9.99.99 -> satisfiable by paragonie/random_compat[v9.99.99].
    - paragonie/random_compat v9.99.99 requires php ^7 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 14
    - Installation request for ralouphie/getallheaders 3.0.3 -> satisfiable by ralouphie/getallheaders[3.0.3].
    - ralouphie/getallheaders 3.0.3 requires php >=5.6 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 15
    - Installation request for typo3/phar-stream-wrapper v3.1.4 -> satisfiable by typo3/phar-stream-wrapper[v3.1.4].
    - typo3/phar-stream-wrapper v3.1.4 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 16
    - Installation request for drupal/coder 8.3.9 -> satisfiable by drupal/coder[8.3.9].
    - drupal/coder 8.3.9 requires php >=7.0.8 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 17
    - Installation request for myclabs/deep-copy 1.7.0 -> satisfiable by myclabs/deep-copy[1.7.0].
    - myclabs/deep-copy 1.7.0 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 18
    - Installation request for phar-io/manifest 1.0.1 -> satisfiable by phar-io/manifest[1.0.1].
    - phar-io/manifest 1.0.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 19
    - Installation request for phar-io/version 1.0.1 -> satisfiable by phar-io/version[1.0.1].
    - phar-io/version 1.0.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 20
    - Installation request for phpdocumentor/reflection-docblock 4.3.4 -> satisfiable by phpdocumentor/reflection-docblock[4.3.4].
    - phpdocumentor/reflection-docblock 4.3.4 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 21
    - Installation request for phpdocumentor/type-resolver 0.5.1 -> satisfiable by phpdocumentor/type-resolver[0.5.1].
    - phpdocumentor/type-resolver 0.5.1 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 22
    - Installation request for phpunit/php-code-coverage 5.3.2 -> satisfiable by phpunit/php-code-coverage[5.3.2].
    - phpunit/php-code-coverage 5.3.2 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 23
    - Installation request for phpunit/php-token-stream 2.0.2 -> satisfiable by phpunit/php-token-stream[2.0.2].
    - phpunit/php-token-stream 2.0.2 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 24
    - Installation request for phpunit/phpunit 6.5.14 -> satisfiable by phpunit/phpunit[6.5.14].
    - phpunit/phpunit 6.5.14 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 25
    - Installation request for phpunit/phpunit-mock-objects 5.0.10 -> satisfiable by phpunit/phpunit-mock-objects[5.0.10].
    - phpunit/phpunit-mock-objects 5.0.10 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 26
    - Installation request for sebastian/code-unit-reverse-lookup 1.0.1 -> satisfiable by sebastian/code-unit-reverse-lookup[1.0.1].
    - sebastian/code-unit-reverse-lookup 1.0.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 27
    - Installation request for sebastian/comparator 2.1.3 -> satisfiable by sebastian/comparator[2.1.3].
    - sebastian/comparator 2.1.3 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 28
    - Installation request for sebastian/diff 2.0.1 -> satisfiable by sebastian/diff[2.0.1].
    - sebastian/diff 2.0.1 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 29
    - Installation request for sebastian/environment 3.1.0 -> satisfiable by sebastian/environment[3.1.0].
    - sebastian/environment 3.1.0 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 30
    - Installation request for sebastian/exporter 3.1.2 -> satisfiable by sebastian/exporter[3.1.2].
    - sebastian/exporter 3.1.2 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 31
    - Installation request for sebastian/global-state 2.0.0 -> satisfiable by sebastian/global-state[2.0.0].
    - sebastian/global-state 2.0.0 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 32
    - Installation request for sebastian/object-enumerator 3.0.3 -> satisfiable by sebastian/object-enumerator[3.0.3].
    - sebastian/object-enumerator 3.0.3 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 33
    - Installation request for sebastian/object-reflector 1.1.1 -> satisfiable by sebastian/object-reflector[1.1.1].
    - sebastian/object-reflector 1.1.1 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 34
    - Installation request for sebastian/recursion-context 3.0.0 -> satisfiable by sebastian/recursion-context[3.0.0].
    - sebastian/recursion-context 3.0.0 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 35
    - Installation request for sebastian/resource-operations 1.0.0 -> satisfiable by sebastian/resource-operations[1.0.0].
    - sebastian/resource-operations 1.0.0 requires php >=5.6.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 36
    - Installation request for sebastian/version 2.0.1 -> satisfiable by sebastian/version[2.0.1].
    - sebastian/version 2.0.1 requires php >=5.6 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 37
    - Installation request for theseer/tokenizer 1.1.3 -> satisfiable by theseer/tokenizer[1.1.3].
    - theseer/tokenizer 1.1.3 requires php ^7.0 -> your PHP version (5.5.38) does not satisfy that requirement.
  Problem 38
    - paragonie/random_compat v9.99.99 requires php ^7 -> your PHP version (5.5.38) does not satisfy that requirement.
    - symfony/polyfill-php70 v1.17.0 requires paragonie/random_compat ~1.0|~2.0|~9.99 -> satisfiable by paragonie/random_compat[v9.99.99].
    - Installation request for symfony/polyfill-php70 v1.17.0 -> satisfiable by symfony/polyfill-php70[v1.17.0].

History

UpdatedResult
11 Dec 2020 at 21:37 UTC
11 Dec 2020 at 21:31 UTC
30 Oct 2020 at 01:17 UTC
9 Jan 2019 at 17:24 UTC
29 Nov 2017 at 14:44 UTC
29 Nov 2017 at 14:44 UTC
29 Nov 2017 at 14:42 UTC
29 Nov 2017 at 14:25 UTC
29 Nov 2017 at 13:56 UTC
23 Aug 2017 at 05:17 UTC
23 Aug 2017 at 05:14 UTC