diff --git a/component_charts.ipynb b/component_charts.ipynb
index 0b76031..8422176 100644
--- a/component_charts.ipynb
+++ b/component_charts.ipynb
@@ -56,14 +56,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_data_quality_feedback.ipynb b/template_data_quality_feedback.ipynb
index 886e968..1791be9 100644
--- a/template_data_quality_feedback.ipynb
+++ b/template_data_quality_feedback.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_publisher_analysis.ipynb b/template_publisher_analysis.ipynb
index 3838d17..10456f5 100644
--- a/template_publisher_analysis.ipynb
+++ b/template_publisher_analysis.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_structure_and_format_feedback.ipynb b/template_structure_and_format_feedback.ipynb
index 20f42a9..42a1e43 100644
--- a/template_structure_and_format_feedback.ipynb
+++ b/template_structure_and_format_feedback.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_usability_checks.ipynb b/template_usability_checks.ipynb
index a83342f..e691577 100644
--- a/template_usability_checks.ipynb
+++ b/template_usability_checks.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_usability_checks_fieldlist.ipynb b/template_usability_checks_fieldlist.ipynb
index 38f1caf..90911c1 100644
--- a/template_usability_checks_fieldlist.ipynb
+++ b/template_usability_checks_fieldlist.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",
diff --git a/template_usability_checks_registry.ipynb b/template_usability_checks_registry.ipynb
index 817a5fb..dd81dd3 100644
--- a/template_usability_checks_registry.ipynb
+++ b/template_usability_checks_registry.ipynb
@@ -176,14 +176,14 @@
       "source": [
         "import altair as alt\n",
         "\n",
-        "class MissingColumns(Exception):\n",
+        "class MissingColumnsError(Exception):\n",
         "    def __init__(self, columns):\n",
         "        super().__init__(f\"The source data is missing one or more of these columns: {columns}\")\n",
         "\n",
         "def check_columns(columns, data):\n",
         "    # check if input contains the right columns\n",
         "    if not columns.issubset(data.columns):\n",
-        "        raise MissingColumns(columns)\n",
+        "        raise MissingColumnsError(columns)\n",
         "\n",
         "\n",
         "def plot_release_count(release_counts):\n",