add document to task error 500

{
  error: {
    code: 500,
    message: 'Internal Server Error',
    exception: [
      {
        message: 'Notice: Undefined property: Arr\\Is\\API\\V1\\Task\\AddDocumentToTask::$taskId',
        'class': 'ErrorException',
        trace: [
          {
            namespace: '',
            short_class: '',
            'class': '',
            type: '',
            'function': '',
            file: '/source/src/Security/Voter/AssigneeTaskVoter.php',
            line: 74,
            args: [],
          },
          {
            namespace: 'Arr\\Is\\Security\\Voter',
            short_class: 'AssigneeTaskVoter',
            'class': 'Arr\\Is\\Security\\Voter\\AssigneeTaskVoter',
            type: '->',
            'function': 'voteOnAttribute',
            file: '/source/vendor/symfony/security/Core/Authorization/Voter/Voter.php',
            line: 40,
            args: [
              [
                'string',
                'execute',
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
              [
                'object',
                'Symfony\\Component\\Security\\Core\\Authentication\\Token\\PreAuthenticatedToken',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\Security\\Core\\Authorization\\Voter',
            short_class: 'Voter',
            'class': 'Symfony\\Component\\Security\\Core\\Authorization\\Voter\\Voter',
            type: '->',
            'function': 'vote',
            file: '/source/vendor/symfony/security/Core/Authorization/AccessDecisionManager.php',
            line: 155,
            args: [
              [
                'object',
                'Symfony\\Component\\Security\\Core\\Authentication\\Token\\PreAuthenticatedToken',
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
              [
                'array',
                [
                  [
                    'string',
                    'execute',
                  ],
                ],
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\Security\\Core\\Authorization',
            short_class: 'AccessDecisionManager',
            'class': 'Symfony\\Component\\Security\\Core\\Authorization\\AccessDecisionManager',
            type: '->',
            'function': 'decideUnanimous',
            file: '/source/vendor/symfony/security/Core/Authorization/AccessDecisionManager.php',
            line: 60,
            args: [
              [
                'object',
                'Symfony\\Component\\Security\\Core\\Authentication\\Token\\PreAuthenticatedToken',
              ],
              [
                'array',
                [
                  [
                    'string',
                    'execute',
                  ],
                ],
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\Security\\Core\\Authorization',
            short_class: 'AccessDecisionManager',
            'class': 'Symfony\\Component\\Security\\Core\\Authorization\\AccessDecisionManager',
            type: '->',
            'function': 'decide',
            file: '/source/vendor/symfony/security/Core/Authorization/TraceableAccessDecisionManager.php',
            line: 52,
            args: [
              [
                'object',
                'Symfony\\Component\\Security\\Core\\Authentication\\Token\\PreAuthenticatedToken',
              ],
              [
                'array',
                [
                  [
                    'string',
                    'execute',
                  ],
                ],
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\Security\\Core\\Authorization',
            short_class: 'TraceableAccessDecisionManager',
            'class': 'Symfony\\Component\\Security\\Core\\Authorization\\TraceableAccessDecisionManager',
            type: '->',
            'function': 'decide',
            file: '/source/vendor/symfony/security/Core/Authorization/AuthorizationChecker.php',
            line: 60,
            args: [
              [
                'object',
                'Symfony\\Component\\Security\\Core\\Authentication\\Token\\PreAuthenticatedToken',
              ],
              [
                'array',
                [
                  [
                    'string',
                    'execute',
                  ],
                ],
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\Security\\Core\\Authorization',
            short_class: 'AuthorizationChecker',
            'class': 'Symfony\\Component\\Security\\Core\\Authorization\\AuthorizationChecker',
            type: '->',
            'function': 'isGranted',
            file: '/source/src/EventListener/SecurityListener.php',
            line: 38,
            args: [
              [
                'array',
                [
                  [
                    'string',
                    'execute',
                  ],
                ],
              ],
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
            ],
          },
          {
            namespace: 'Arr\\Is\\EventListener',
            short_class: 'SecurityListener',
            'class': 'Arr\\Is\\EventListener\\SecurityListener',
            type: '->',
            'function': 'vote',
            file: '/source/src/EventListener/SecurityListener.php',
            line: 23,
            args: [
              [
                'object',
                'Arr\\Is\\API\\V1\\Task\\AddDocumentToTask',
              ],
            ],
          },
          {
            namespace: 'Arr\\Is\\EventListener',
            short_class: 'SecurityListener',
            'class': 'Arr\\Is\\EventListener\\SecurityListener',
            type: '->',
            'function': 'onKernelRequest',
            file: null,
            line: null,
            args: [
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Debug\\TraceableEventDispatcher',
              ],
            ],
          },
          {
            namespace: '',
            short_class: '',
            'class': '',
            type: '',
            'function': 'call_user_func',
            file: '/source/vendor/symfony/event-dispatcher/Debug/WrappedListener.php',
            line: 104,
            args: [
              [
                'array',
                [
                  [
                    'object',
                    'Arr\\Is\\EventListener\\SecurityListener',
                  ],
                  [
                    'string',
                    'onKernelRequest',
                  ],
                ],
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Debug\\TraceableEventDispatcher',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\EventDispatcher\\Debug',
            short_class: 'WrappedListener',
            'class': 'Symfony\\Component\\EventDispatcher\\Debug\\WrappedListener',
            type: '->',
            'function': '__invoke',
            file: '/source/vendor/symfony/event-dispatcher/EventDispatcher.php',
            line: 212,
            args: [
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\EventDispatcher\\EventDispatcher',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\EventDispatcher',
            short_class: 'EventDispatcher',
            'class': 'Symfony\\Component\\EventDispatcher\\EventDispatcher',
            type: '->',
            'function': 'doDispatch',
            file: '/source/vendor/symfony/event-dispatcher/EventDispatcher.php',
            line: 44,
            args: [
              [
                'array',
                [
                  [
                    'object',
                    'Symfony\\Component\\EventDispatcher\\Debug\\WrappedListener',
                  ],
                  [
                    'object',
                    'Symfony\\Component\\EventDispatcher\\Debug\\WrappedListener',
                  ],
                ],
              ],
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\EventDispatcher',
            short_class: 'EventDispatcher',
            'class': 'Symfony\\Component\\EventDispatcher\\EventDispatcher',
            type: '->',
            'function': 'dispatch',
            file: '/source/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php',
            line: 139,
            args: [
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\EventDispatcher\\Debug',
            short_class: 'TraceableEventDispatcher',
            'class': 'Symfony\\Component\\EventDispatcher\\Debug\\TraceableEventDispatcher',
            type: '->',
            'function': 'dispatch',
            file: '/source/vendor/symfony/http-kernel/HttpKernel.php',
            line: 144,
            args: [
              [
                'string',
                'kernel.controller_arguments',
              ],
              [
                'object',
                'Symfony\\Component\\HttpKernel\\Event\\FilterControllerArgumentsEvent',
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\HttpKernel',
            short_class: 'HttpKernel',
            'class': 'Symfony\\Component\\HttpKernel\\HttpKernel',
            type: '->',
            'function': 'handleRaw',
            file: '/source/vendor/symfony/http-kernel/HttpKernel.php',
            line: 66,
            args: [
              [
                'object',
                'Symfony\\Component\\HttpFoundation\\Request',
              ],
              [
                'integer',
                1,
              ],
            ],
          },
          {
            namespace: 'Symfony\\Component\\HttpKernel',
            short_class: 'HttpKernel',
            'class': 'Symfony\\Component\\HttpKernel\\HttpKernel',
            type: '->',
            'function': 'handle',
            file: '/source/vendor/symfony/http-kernel/Kernel.php',
            line: 190,
            args: [
              [
                'object',
                'Symfony\\Component\\HttpFoundation\\Request',
              ],
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              ],
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              ],
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          },
          {
            namespace: 'Symfony\\Component\\HttpKernel',
            short_class: 'Kernel',
            'class': 'Symfony\\Component\\HttpKernel\\Kernel',
            type: '->',
            'function': 'handle',
            file: '/source/public/index.php',
            line: 28,
            args: [
              [
                'object',
                'Symfony\\Component\\HttpFoundation\\Request',
              ],
            ],
          },
        ],
      },
    ],
  },
}