diff --git a/data/helpers.d/string b/data/helpers.d/string
index 7036b3b3c..a96157f78 100644
--- a/data/helpers.d/string
+++ b/data/helpers.d/string
@@ -43,12 +43,14 @@ ynh_replace_string () {
     local target_file
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
+    set +o xtrace # set +x
 
     local delimit=@
     # Escape the delimiter if it's in the string.
     match_string=${match_string//${delimit}/"\\${delimit}"}
     replace_string=${replace_string//${delimit}/"\\${delimit}"}
 
+    set -o xtrace # set -x
     sed --in-place "s${delimit}${match_string}${delimit}${replace_string}${delimit}g" "$target_file"
 }
 
diff --git a/data/helpers.d/utils b/data/helpers.d/utils
index ef019e894..34a089eb1 100644
--- a/data/helpers.d/utils
+++ b/data/helpers.d/utils
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-YNH_APP_BASEDIR=$(realpath $([[ "$(basename $0)" =~ ^backup|restore$ ]] && echo '../settings' || [[ -n "$YNH_ACTION" ]] && echo '.' || echo '..' ))
+YNH_APP_BASEDIR=$(realpath $([[ "$(basename $0)" =~ ^backup|restore$ ]] && echo '../settings' || [[ -n "${YNH_ACTION:-}" ]] && echo '.' || echo '..' ))
 
 # Handle script crashes / failures
 #
@@ -519,6 +519,8 @@ ynh_read_var_in_file() {
 
     [[ -f $file ]] || ynh_die --message="File $file does not exists"
 
+    set +o xtrace # set +x
+
     # Get the line number after which we search for the variable
     local line_number=1
     if [[ -n "$after" ]];
@@ -526,6 +528,7 @@ ynh_read_var_in_file() {
         line_number=$(grep -n $after $file | cut -d: -f1)
         if [[ -z "$line_number" ]];
         then
+            set -o xtrace # set -x
             return 1
         fi
     fi
@@ -555,6 +558,7 @@ ynh_read_var_in_file() {
     # Extract the part after assignation sign
     local expression_with_comment="$(tail +$line_number ${file} | grep -i -o -P $var_part'\K.*$' || echo YNH_NULL | head -n1)"
     if [[ "$expression_with_comment" == "YNH_NULL" ]]; then
+        set -o xtrace # set -x
         echo YNH_NULL
         return 0
     fi
@@ -570,6 +574,7 @@ ynh_read_var_in_file() {
     else
         echo "$expression"
     fi
+    set -o xtrace # set -x
 }
 
 # Set a value into heterogeneous file (yaml, json, php, python...)
@@ -594,6 +599,8 @@ ynh_write_var_in_file() {
 
     [[ -f $file ]] || ynh_die --message="File $file does not exists"
 
+    set +o xtrace # set +x
+
     # Get the line number after which we search for the variable
     local line_number=1
     if [[ -n "$after" ]];
@@ -601,6 +608,7 @@ ynh_write_var_in_file() {
         line_number=$(grep -n $after $file | cut -d: -f1)
         if [[ -z "$line_number" ]];
         then
+            set -o xtrace # set -x
             return 1
         fi
     fi
@@ -631,9 +639,10 @@ ynh_write_var_in_file() {
     # Extract the part after assignation sign
     local expression_with_comment="$(tail +$line_number ${file} | grep -i -o -P $var_part'\K.*$' || echo YNH_NULL | head -n1)"
     if [[ "$expression_with_comment" == "YNH_NULL" ]]; then
+        set -o xtrace # set -x
         return 1
     fi
-    
+
     # Remove comments if needed
     local expression="$(echo "$expression_with_comment" | sed "s@$comments[^$string]*\$@@g" | sed "s@\s*[$endline]*\s*]*\$@@")"
     endline=${expression_with_comment#"$expression"}
@@ -661,6 +670,7 @@ ynh_write_var_in_file() {
         fi
         sed -ri "${range}s$delimiter(^${var_part}).*\$$delimiter\1${value}${endline}${delimiter}i" ${file}
     fi
+    set -o xtrace # set -x
 }
 
 
@@ -727,6 +737,7 @@ ynh_secure_remove () {
     local file
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
+    set +o xtrace # set +x
 
     local forbidden_path=" \
     /var/www \
@@ -754,6 +765,8 @@ ynh_secure_remove () {
     else
         ynh_print_info --message="'$file' wasn't deleted because it doesn't exist."
     fi
+
+    set -o xtrace # set -x
 }
 
 # Extract a key from a plain command output
diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index cfd773bd9..3ba7fd5e4 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -2180,6 +2180,13 @@ def _set_default_ask_questions(arguments):
                 key = "app_manifest_%s_ask_%s" % (script_name, arg["name"])
                 arg["ask"] = m18n.n(key)
 
+            # Also it in fact doesn't make sense for any of those questions to have an example value nor a default value...
+            if arg.get("type") in ["domain", "user", "password"]:
+                if "example" in arg:
+                    del arg["example"]
+                if "default" in arg:
+                    del arg["domain"]
+
     return arguments
 
 
diff --git a/src/yunohost/log.py b/src/yunohost/log.py
index b7b585c94..3f25d7a7d 100644
--- a/src/yunohost/log.py
+++ b/src/yunohost/log.py
@@ -69,7 +69,13 @@ def log_list(limit=None, with_details=False, with_suboperations=False):
     logs = list(reversed(sorted(logs)))
 
     if limit is not None:
-        logs = logs[:limit]
+        if with_suboperations:
+            logs = logs[:limit]
+        else:
+            # If we displaying only parent, we are still gonna load up to limit * 5 logs
+            # because many of them are suboperations which are not gonna be kept
+            # Yet we still want to obtain ~limit number of logs
+            logs = logs[:limit * 5]
 
     for log in logs:
 
@@ -122,6 +128,9 @@ def log_list(limit=None, with_details=False, with_suboperations=False):
     else:
         operations = [o for o in operations.values()]
 
+    if limit:
+        operations = operations[:limit]
+
     operations = list(reversed(sorted(operations, key=lambda o: o["name"])))
     # Reverse the order of log when in cli, more comfortable to read (avoid
     # unecessary scrolling)
@@ -151,26 +160,37 @@ def log_show(
         filter_irrelevant = True
 
     if filter_irrelevant:
-        filters = [
-            r"set [+-]x$",
-            r"set [+-]o xtrace$",
-            r"local \w+$",
-            r"local legacy_args=.*$",
-            r".*Helper used in legacy mode.*",
-            r"args_array=.*$",
-            r"local -A args_array$",
-            r"ynh_handle_getopts_args",
-            r"ynh_script_progression",
-        ]
+
+        def _filter(lines):
+            filters = [
+                r"set [+-]x$",
+                r"set [+-]o xtrace$",
+                r"set [+-]o errexit$",
+                r"set [+-]o nounset$",
+                r"trap '' EXIT",
+                r"local \w+$",
+                r"local exit_code=(1|0)$",
+                r"local legacy_args=.*$",
+                r"local -A args_array$",
+                r"args_array=.*$",
+                r"ret_code=1",
+                r".*Helper used in legacy mode.*",
+                r"ynh_handle_getopts_args",
+                r"ynh_script_progression",
+                r"sleep 0.5",
+                r"'\[' (1|0) -eq (1|0) '\]'$",
+                r"\[?\['? -n '' '?\]\]?$",
+                r"rm -rf /var/cache/yunohost/download/$",
+                r"type -t ynh_clean_setup$",
+                r"DEBUG - \+ echo '",
+                r"DEBUG - \+ exit (1|0)$",
+            ]
+            filters = [re.compile(f) for f in filters]
+            return [line for line in lines if not any(f.search(line.strip()) for f in filters)]
     else:
-        filters = []
+        def _filter(lines):
+            return lines
 
-    def _filter_lines(lines, filters=[]):
-
-        filters = [re.compile(f) for f in filters]
-        return [
-            line for line in lines if not any(f.search(line.strip()) for f in filters)
-        ]
 
     # Normalize log/metadata paths and filenames
     abs_path = path
@@ -209,7 +229,7 @@ def log_show(
             content += "\n============\n\n"
         if os.path.exists(log_path):
             actual_log = read_file(log_path)
-            content += "\n".join(_filter_lines(actual_log.split("\n"), filters))
+            content += "\n".join(_filter(actual_log.split("\n")))
 
         url = yunopaste(content)
 
@@ -282,13 +302,13 @@ def log_show(
     if os.path.exists(log_path):
         from yunohost.service import _tail
 
-        if number and filters:
+        if number and filter_irrelevant:
             logs = _tail(log_path, int(number * 4))
         elif number:
             logs = _tail(log_path, int(number))
         else:
             logs = read_file(log_path)
-        logs = _filter_lines(logs, filters)
+        logs = list(_filter(logs))
         if number:
             logs = logs[-number:]
         infos["log_path"] = log_path
diff --git a/src/yunohost/utils/config.py b/src/yunohost/utils/config.py
index 3fccd8cc5..8ec198d34 100644
--- a/src/yunohost/utils/config.py
+++ b/src/yunohost/utils/config.py
@@ -423,7 +423,8 @@ class ConfigPanel:
         if services_to_reload:
             logger.info("Reloading services...")
         for service in services_to_reload:
-            service = service.replace("__APP__", self.app)
+            if hasattr(self, "app"):
+                service = service.replace("__APP__", self.app)
             service_reload_or_restart(service)
 
     def _iterate(self, trigger=["option"]):
@@ -815,6 +816,14 @@ class UserQuestion(Question):
 
         super().__init__(question, user_answers)
         self.choices = user_list()["users"]
+
+        if not self.choices:
+            raise YunohostValidationError(
+                "app_argument_invalid",
+                name=self.name,
+                error="You should create a YunoHost user first."
+            )
+
         if self.default is None:
             root_mail = "root@%s" % _get_maindomain()
             for user in self.choices.keys():
@@ -897,8 +906,8 @@ class DisplayTextQuestion(Question):
                 "warning": "yellow",
                 "danger": "red",
             }
-            text = m18n.g(self.style) if self.style != "danger" else m18n.n("danger")
-            return colorize(text, color[self.style]) + f" {text}"
+            prompt = m18n.g(self.style) if self.style != "danger" else m18n.n("danger")
+            return colorize(prompt, color[self.style]) + f" {text}"
         else:
             return text