Piwik 1.11 problem with HiddenTracking plugin

Hello everyone!

I’ve installed last version of this plugin HiddenTracking plugin - no one (even search engines) will know you use Piwik for tracking at all! · Issue #2768 · matomo-org/matomo · GitHub
and everything seems OK, but

When I am trying to download files, for example here Settings / Websites / mywebsite.com / Hidden Tracking Code - View Tracking code

And click on “Download” link in the bottom, to download generated files, I get the error message:

Warning: rmdir(/home/xxx/public_html/stats/tmp/HiddenTracking/c81e728d9d4c2f636f067f89cc14862c) [function.rmdir]: Directory not empty in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 153

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 rmdir(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:153]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 157

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:157]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 158

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:158]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 159

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:159]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 160

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:160]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 161

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:161]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 162

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:162]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 163

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:163]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 164

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:164]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

There is an error. Please report the message (Piwik 1.11) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/stats/libs/Zend/Log/Writer/Stream.php:133) in /home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php on line 165

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [:]
#1 header(…) called at [/home/xxx/public_html/stats/plugins/HiddenTracking/HiddenTracking.php:165]
#2 Piwik_HiddenTracking_Controller->getZip(…) called at [:]
#3 call_user_func_array(…) called at [/home/xxx/public_html/stats/core/FrontController.php:136]
#4 Piwik_FrontController->dispatch(…) called at [/home/xxx/public_html/stats/index.php:52]

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