diff --git a/clean.yml b/clean.yml
index e1e19d7..cd9af4c 100644
--- a/clean.yml
+++ b/clean.yml
@@ -13,4 +13,4 @@
         - "roles/main_infra/files/terraform.tfplan"
         - "log.txt"
         - "blockscout-*"
-        - "/tmp/files-*"
+        - "/tmp/files-*"
\ No newline at end of file
diff --git a/deploy_software.yml b/deploy_software.yml
index 563469e..ff4c4b4 100644
--- a/deploy_software.yml
+++ b/deploy_software.yml
@@ -16,4 +16,4 @@
          when: backend|bool and upload_config_to_s3|bool 
        - include_role:
            name: s3_debug
-         when: backend|bool and upload_debug_info_to_s3|bool 
+         when: backend|bool and upload_debug_info_to_s3|bool 
\ No newline at end of file
diff --git a/group_vars/blockscout.yml.example b/group_vars/blockscout.yml.example
index b3b9d06..9b42367 100644
--- a/group_vars/blockscout.yml.example
+++ b/group_vars/blockscout.yml.example
@@ -1,3 +1,6 @@
+# BlockScout related variables
+
+## An address of BlockScout repo to download
 blockscout_repo: https://github.com/poanetwork/blockscout
 
 # Please, specify the credentials for the test Postgres installation
diff --git a/group_vars/infrastructure.yml.example b/group_vars/infrastructure.yml.example
index 82b9d02..348be3a 100644
--- a/group_vars/infrastructure.yml.example
+++ b/group_vars/infrastructure.yml.example
@@ -1,5 +1,8 @@
 # Infrastructure related group variables
 
+## Exact path to the TF binary on your local machine
+terraform_location: "/usr/local/bin/terraform"
+
 ## Name of the DynamoDB table where current lease of TF state file will be stored
 dynamodb_table: "poa-terraform-lock"
 
diff --git a/roles/main_infra/files/libexec/init.sh b/roles/main_infra/files/libexec/init.sh
index 36a6218..d69276a 100755
--- a/roles/main_infra/files/libexec/init.sh
+++ b/roles/main_infra/files/libexec/init.sh
@@ -147,7 +147,7 @@ EOF
 
 log "Installing Erlang.."
 
-wget http://packages.erlang-solutions.com/site/esl/esl-erlang/FLAVOUR_1_general/esl-erlang_21.1-1~centos~7_amd64.rpm
+wget https://packages.erlang-solutions.com/erlang/rpm/centos/7/x86_64/esl-erlang_21.1-1~centos~7_amd64.rpm
 yum localinstall -y wxGTK-devel unixODBC-devel >"$LOG"
 yum localinstall -y esl-erlang_21.1-1~centos~7_amd64.rpm >"$LOG"
 
diff --git a/roles/s3_config/tasks/main.yml b/roles/s3_config/tasks/main.yml
index 3cb963f..d3efd6a 100644
--- a/roles/s3_config/tasks/main.yml
+++ b/roles/s3_config/tasks/main.yml
@@ -5,4 +5,4 @@
     - "group_vars/{{ group_names[0] }}"
     - "group_vars/{{ group_names[0] }}.yml"
     - "host_vars/{{ inventory_hostname }}.yml"
-    - "host_vars/{{ inventory_hostname }}"
+    - "host_vars/{{ inventory_hostname }}"
\ No newline at end of file
diff --git a/roles/s3_debug/tasks/main.yml b/roles/s3_debug/tasks/main.yml
index 4f617d3..eeb6719 100644
--- a/roles/s3_debug/tasks/main.yml
+++ b/roles/s3_debug/tasks/main.yml
@@ -18,4 +18,4 @@
     secret_key: "{{ aws_secret_key|default(omit) }}"
     profile: "{{ aws_profile|default(omit) }}"
     region: "{{ aws_region|default(omit) }}"
-  when: stat_result.stat.exists == true
+  when: stat_result.stat.exists == true
\ No newline at end of file