XDebug no pudo abrir el file de debugging remota '/var/log/xdebug.log' mientras leía el encabezado de respuesta desde la parte superior

Estoy usando docker para desarrollar, que funcionó sin ningún problema hasta que no me quedó espacio en mi disco (mi partición de Ubuntu es solo 30G). Así que borré todos los contenedores e imágenes que ya no se estaban ejecutando / usaban y tenían suficiente espacio.

Después de volver a iniciar mi aplicación, ahora recibo una ContextErrorException con el siguiente post

Warning: Header may not contain more than a single header, new line detected

Cuando miro en el error.log , este es el contenido

 2017/04/29 12:53:13 [error] 13#13: *1 FastCGI sent in stderr: "PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'" while reading response header from upstream, client: 172.17.0.1, server: app, request: "GET /admin/dashboard HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "localhost:8080" 2017/04/29 12:53:24 [error] 13#13: *1 FastCGI sent in stderr: "PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'. PHP message: XDebug could not open the remote debug file '/var/log/xdebug.log'" while reading response header from upstream, client: 172.17.0.1, server: app, request: "GET /admin/dashboard HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "localhost:8080" 

Hice los siguientes pasos en ambos entornos (docker-container y host system)
xdebug.log a /var/log/ y vi que no había ningún file xdebug.log así que creé el file y, para fines de testing, les di 777 derechos y cambié el propietario / grupo al mismo que mis files de proyecto / docker.

El error todavía existe, sin embargo. Incluso borré TODOS los contenedores e imágenes, no solo los que no se usaron, y los construí completamente desde el principio. Esto no parece un error de Docker, porque funcionó sin problemas hasta que el espacio en disco estaba lleno, ¿verdad?

Este es el resultado de php -i | grep xdebug php -i | grep xdebug

 xdebug xdebug support => enabled xdebug.auto_trace => Off => Off xdebug.cli_color => 0 => 0 xdebug.collect_assignments => Off => Off xdebug.collect_includes => On => On xdebug.collect_params => 0 => 0 xdebug.collect_return => Off => Off xdebug.collect_vars => Off => Off xdebug.coverage_enable => On => On xdebug.default_enable => On => On xdebug.dump.COOKIE => * => * xdebug.dump.ENV => no value => no value xdebug.dump.FILES => no value => no value xdebug.dump.GET => * => * xdebug.dump.POST => * => * xdebug.dump.REQUEST => * => * xdebug.dump.SERVER => * => * xdebug.dump.SESSION => * => * xdebug.dump_globals => On => On xdebug.dump_once => On => On xdebug.dump_undefined => Off => Off xdebug.extended_info => On => On xdebug.file_link_format => no value => no value xdebug.force_display_errors => Off => Off xdebug.force_error_reporting => 0 => 0 xdebug.halt_level => 0 => 0 xdebug.idekey => php-debug => php-debug xdebug.max_nesting_level => 250 => 250 xdebug.max_stack_frames => -1 => -1 xdebug.overload_var_dump => On => On xdebug.profiler_aggregate => Off => Off xdebug.profiler_append => Off => Off xdebug.profiler_enable => Off => Off xdebug.profiler_enable_trigger => Off => Off xdebug.profiler_enable_trigger_value => no value => no value xdebug.profiler_output_dir => /tmp => /tmp xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p xdebug.remote_addr_header => no value => no value xdebug.remote_autostart => Off => Off xdebug.remote_connect_back => Off => Off xdebug.remote_cookie_expire_time => 3600 => 3600 xdebug.remote_enable => On => On xdebug.remote_handler => dbgp => dbgp xdebug.remote_host => 192.168.0.10 => 192.168.0.10 xdebug.remote_log => /var/log/xdebug.log => /var/log/xdebug.log xdebug.remote_mode => req => req xdebug.remote_port => 9000 => 9000 xdebug.scream => Off => Off xdebug.show_error_trace => Off => Off xdebug.show_exception_trace => Off => Off xdebug.show_local_vars => Off => Off xdebug.show_mem_delta => Off => Off xdebug.trace_enable_trigger => Off => Off xdebug.trace_enable_trigger_value => no value => no value xdebug.trace_format => 0 => 0 xdebug.trace_options => 0 => 0 xdebug.trace_output_dir => /tmp => /tmp xdebug.trace_output_name => trace.%c => trace.%c xdebug.var_display_max_children => 128 => 128 xdebug.var_display_max_data => 512 => 512 xdebug.var_display_max_depth => 4 => 4 

Alguien tiene alguna idea?