This page lists common errors and the steps needed to troubleshoot them.

Issues building the site

Address already in use

When you try to build the site, you get this error in iTerm:

jekyll 2.5.3 | Error:  Address already in use - bind(2)

This happens if a server is already in use. To fix this, edit your config file and change the port to a unique number.

If the previous server wasn’t shut down properly, you can kill the server process using these commands:

ps aux | grep jekyll

Find the PID (for example, it looks like “22298”).

Then type kill -9 22298 where “22298” is the PID.

Alternatively, type the following to stop all Jekyll servers:

kill -9 $(ps aux | grep '[j]ekyll' | awk '{print $2}')

shell file not executable

If you run into permissions errors trying to run a shell script file (such as mydoc_multibuild_web.sh), you may need to change the file permissions to make the sh file executable. Browse to the directory containing the shell script and run the following:

chmod +x build_writer.sh

shell file not runnable

If you’re using a PC, rename your shell files with a .bat extension.

“page 0” cross references in the PDF

If you see “page 0” cross-references in the PDF, the URL doesn’t exist. Check to make sure you actually included this page in the build.

If it’s not a page but rather a file, you need to add a noCrossRef class to the file so that your print stylesheet excludes the counter from it. Add class="noCrossRef" as an attribute to the link. In the css/printstyles.css file, there is a style that should remove the counter from anchor elements with this class.

The PDF is blank

Check the prince-list.txt file in the output to see if it contains links. If not, you have something wrong with the logic in the prince-list.txt file. Check the conditions.html file in your _includes to see if the audience specified in your configuration file aligns with the buildAudience in the conditions.html file

If you build your site but the sidebar doesn’t appear, check the following:

Look in _includes/custom/sidebarconfigs.html and make sure the conditional values there match up with values you’re using in each page’s frontmatter.

Make sure each TOC item has an output property that specifies web or pdf.

Understanding how the theme works can be helpful in troubleshooting. The _includes/sidebar.html file loops through the values in the _data/sidebar.yml file. There are if statements that check whether the conditions (as specified in the conditions.html file) are met. If the sidebar.yml item doesn’t have the right output, then it won’t get displayed in the sidebar. It would instead get skipped.

If the sidebar levels aren’t collapsed, usually your JavaScript is broken somewhere. Open the JavaScript Console and look to see where the problem is. If one script breaks, then other scripts will break too, so troubleshooting it is a little tricky.

Search isn’t working

If the search isn’t working, check the JSON validity in the search.json file in your output folder. Usually something is invalid. Identify the problematic line, fix the file, or put search: exclude in the frontmatter of the file to exclude it from search.

orzh-introduction

X-WAF-README

nginx-lua-module-zh-wiki

orange_about

agentzh-nginx-guide-01

pra_flame_how

orzh-introduction

X-WAF-README

nginx-lua-module-zh-wiki

orange_about

titlepage

tocpage

p1_landing_page

p1_sample1

p1_sample2

p1_sample3

p1_sample4

p1_sample5

p1_sample6

p1_sample7

titlepage

tocpage

p2_landing_page

p2_sample1

p2_sample2

p2_sample3

p2_sample4

p2_sample5

p2_sample6

p2_sample7

p2_sample8

p2_sample9

p2_sample10

p2_sample11

p2_sample12

p2_sample13

p2_sample14

titlepage

tocpage

p1_landing_page

p1_sample1

p1_sample2

p1_sample3

p1_sample4

p1_sample5

p1_sample6

p1_sample7

titlepage

tocpage

X-WAF-README

xwaf_installation

xwaf_depoly

xwaf_README

xwaf_advanced_readme

xwaf_getting_started

xwaf_faqs_readme

xwaf_roadmap

titlepage

tocpage

nginx-lua-module-zh-wiki

titlepage

tocpage

orange_api_server

orange_build_plugin

orange_dashboard_usage

orange_README

orange_basic_auth

orange_basic_info

orange_divide

orange_key_auth

orange_monitor

orange_rate_limiting

orange_redirect

orange_rewrite

orange_stat

orange_waf

orange_condition

orange_expression

orange_extraction

orange_extractor

orange_handle

orange_judge

orange_rule

orange_about

orange_contributing

orange_issues

orange_usages

titlepage

tocpage

add_new_lua_api

cosocket

get_req_body

get_url_param

helloworld

how_request_http

inline_var

install

install_on_centos

install_on_ubuntu

install_on_windows

install_osx

log_response

outtest

response

safe_sql

share_var

simple_api

sub_request

work_with_location

array_size

break

brief

build_env

call_user_func_array

capture

class

control_structrues

dot_diff

dummy_var

FFI

file

for

function_before_use

function_define

function_descrip

function_parameter

function_result

if_else

local

main

math_library

metatable

module_is_evil

module

not_nill

not_use_lib

not_use_module

object_oriented

operator

re

repeat

string_library

table_library

time_date_function

what_jit

while

pra_flame_how

pra_flame_install

pra_flame_what

pra_flame_when

pra_ngx_lua_allow_deny

pra_ngx_lua_block_io

pra_ngx_lua_cache

pra_ngx_lua_capture

pra_ngx_lua_continue_after_eof

pra_ngx_lua_debug

pra_ngx_lua_ffi

pra_ngx_lua_hot_load

pra_ngx_lua_how_one_instance_time

pra_ngx_lua_how_use_third_lib

pra_ngx_lua_keepalive

pra_ngx_lua_log

pra_ngx_lua_lua-limit

pra_ngx_lua_lua_opt

pra_ngx_lua_lua-variable-scope

pra_ngx_lua_on_abort

pra_ngx_lua_phase

pra_ngx_lua_resolve_the_domain_name

pra_ngx_lua_shared_get_keys

pra_ngx_lua_sleep

pra_ngx_lua_timer

pra_ngx_lua_use_case

pra_ngx_lua_whats_cosocket

pra_redis_auth_connect

pra_redis_dynamic_redis_module_method

pra_redis_out_package

pra_redis_pipeline

pra_redis_pub_sub_package

pra_redis_script

pra_redis_select-keeplive

pra_postgres_health_check

pra_postgres_how_to_use

pra_postgres_not_support_transaction

pra_postgres_sql_inject

pra_postgres_timeout

pra_nginx_balancer

pra_nginx_co-work_of_location

pra_nginx_if_is_evil

pra_nginx_match_uri

pra_nginx_nginx_brief

pra_nginx_nginx_local_pcre

pra_nginx_nginx_log

pra_nginx_nginx

pra_nginx_pitfalls_and_common_mistakes

pra_nginx_reverse_proxy

pra_nginx_static_file

titlepage

tocpage

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_scan_port

candylab_common_sites_log_system

candylab_graylog_clickhouse

candylab_clickhouse_basic

candylab_logs_and_gateway

candylab_sec_system_arch

candylab_logs_dsl_waf

candylab_opensock_list

candylab_opensock_practice

candylab_opensock_email

candylab_base_on_openresty_waf

candylab_dsl_waf

candylab_honeypot_system

candylab_monitor_redis

candylab_threat_replay

candylab_pcap_monitor

candylab_monitor_website

candylab_openrestyplus_waf

candylab_windows_bigdata

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

candylab_clickhouse_basic

titlepage

tocpage

agentzh-nginx-guide-01

agentzh-nginx-guide-02

agentzh-nginx-guide-03

agentzh-nginx-guide-04

agentzh-nginx-guide-05

agentzh-nginx-guide-06

agentzh-nginx-guide-07

agentzh-nginx-guide-08

mydoc_hyperlinks.html#automatedlinks

mydoc_hyperlinks.html#bookmarklinks

mydoc_pages.html#someIdTag

news

nginx-lua-module-zh-wiki

nginx-development-guide-zh

orange_about

X-WAF-README

pra_flame_how