diff --git a/lib/init-action.js b/lib/init-action.js
index 6579713b3..38cb198d2 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -87762,8 +87762,9 @@ function getConfigFileDoesNotExistErrorMessage(configFile) {
 function getConfigFileParseErrorMessage(configFile, message) {
   return `Cannot parse "${configFile}": ${message}`;
 }
-function getInvalidConfigFileMessage(configFile, detail) {
-  return `The configuration file "${configFile}" is invalid: ${detail}`;
+function getInvalidConfigFileMessage(configFile, messages) {
+  const andMore = messages.length > 10 ? `, and ${messages.length - 10} more.` : ".";
+  return `The configuration file "${configFile}" is invalid: ${messages.slice(0, 10).join(", ")}${andMore}`;
 }
 function getConfigFileRepoFormatInvalidMessage(configFile) {
   let error2 = `The configuration file "${configFile}" is not a supported remote file reference.`;
@@ -88071,7 +88072,7 @@ function parseUserConfig(logger, pathInput, contents) {
       throw new ConfigurationError(
         getInvalidConfigFileMessage(
           pathInput,
-          `There are ${result.errors.length} error(s)`
+          result.errors.map((e) => e.stack)
         )
       );
     }
diff --git a/src/config/db-config.test.ts b/src/config/db-config.test.ts
index f6f73b311..a56c73134 100644
--- a/src/config/db-config.test.ts
+++ b/src/config/db-config.test.ts
@@ -457,6 +457,8 @@ test("parseUserConfig - throws a ConfigurationError if validation fails", (t) =>
       ),
     {
       instanceOf: ConfigurationError,
+      message:
+        'The configuration file "test" is invalid: instance.queries is not of a type(s) array.',
     },
   );
 
diff --git a/src/config/db-config.ts b/src/config/db-config.ts
index b20c4fbee..9ae423eb3 100644
--- a/src/config/db-config.ts
+++ b/src/config/db-config.ts
@@ -506,7 +506,7 @@ export function parseUserConfig(
       throw new ConfigurationError(
         errorMessages.getInvalidConfigFileMessage(
           pathInput,
-          `There are ${result.errors.length} error(s)`,
+          result.errors.map((e) => e.stack),
         ),
       );
     }
diff --git a/src/error-messages.ts b/src/error-messages.ts
index dc5544153..578ec6973 100644
--- a/src/error-messages.ts
+++ b/src/error-messages.ts
@@ -23,9 +23,11 @@ export function getConfigFileParseErrorMessage(
 
 export function getInvalidConfigFileMessage(
   configFile: string,
-  detail: string,
+  messages: string[],
 ): string {
-  return `The configuration file "${configFile}" is invalid: ${detail}`;
+  const andMore =
+    messages.length > 10 ? `, and ${messages.length - 10} more.` : ".";
+  return `The configuration file "${configFile}" is invalid: ${messages.slice(0, 10).join(", ")}${andMore}`;
 }
 
 export function getConfigFileRepoFormatInvalidMessage(