Moved required_frontend to a new function and imported that in server.py

app/frontend_management.py

@@ -31,20 +31,46 @@ This error is happening because the ComfyUI frontend is no longer shipped as par
 
 def parse_version(version: str) -> tuple[int, int, int]:
         return tuple(map(int, version.split(".")))
+    
+def is_valid_version(version: str) -> bool:
+    """Validate if a string is a valid semantic version (X.Y.Z format)."""
+    pattern = r"^(\d+)\.(\d+)\.(\d+)$"
+    return bool(re.match(pattern, version))
 
 def get_installed_frontend_version():
     """Get the currently installed frontend package version."""
     frontend_version_str = version("comfyui-frontend-package")
     return frontend_version_str
 
+def get_required_frontend_version():
+    """Get the required frontend version from requirements.txt."""
+    try:
+        with open(requirements_path, "r", encoding="utf-8") as f:
+            for line in f:
+                line = line.strip()
+                if line.startswith("comfyui-frontend-package=="):
+                    version_str = line.split("==")[-1]
+                    if not is_valid_version(version_str):
+                        logging.error(f"Invalid version format in requirements.txt: {version_str}")
+                        return None
+                    return version_str
+            logging.error("comfyui-frontend-package not found in requirements.txt")
+            return None
+    except FileNotFoundError:
+        logging.error("requirements.txt not found. Cannot determine required frontend version.")
+        return None
+    except Exception as e:
+        logging.error(f"Error reading requirements.txt: {e}")
+        return None
+
 def check_frontend_version():
     """Check if the frontend version is up to date."""
 
     try:
         frontend_version_str = get_installed_frontend_version()
         frontend_version = parse_version(frontend_version_str)
-        with open(requirements_path, "r", encoding="utf-8") as f:
+        required_frontend_str = get_required_frontend_version()
-            required_frontend = parse_version(f.readline().split("=")[-1])
+        required_frontend = parse_version(required_frontend_str)
         if frontend_version < required_frontend:
             app.logger.log_startup_warning(
                 f"""
@@ -173,9 +199,9 @@ class FrontendManager:
     CUSTOM_FRONTENDS_ROOT = str(Path(__file__).parents[1] / "web_custom_versions")
 
     @classmethod
-    def get_frontend_version(cls) -> str:
+    def get_required_frontend_version(cls) -> str:
-        """Get the currently installed frontend package version."""
+        """Get the required frontend package version."""
-        return get_installed_frontend_version()
+        return get_required_frontend_version()
 
     @classmethod
     def default_frontend_path(cls) -> str:

server.py

@@ -553,7 +553,7 @@ class PromptServer():
             ram_free = comfy.model_management.get_free_memory(cpu_device)
             vram_total, torch_vram_total = comfy.model_management.get_total_memory(device, torch_total_too=True)
             vram_free, torch_vram_free = comfy.model_management.get_free_memory(device, torch_free_too=True)
-            required_frontend_version = FrontendManager.get_frontend_version()
+            required_frontend_version = FrontendManager.get_required_frontend_version()
 
             system_stats = {
                 "system": {

tests-unit/app_test/frontend_manager_test.py

@@ -177,7 +177,7 @@ def test_get_frontend_version():
     #Arrange
     expected_version = "1.23.4"
     
-    version = FrontendManager.get_frontend_version()
+    version = FrontendManager.get_required_frontend_version()
     
     #Assert
     assert version == expected_version