Use zod fatal support.

src/card.ts

@@ -368,6 +368,8 @@ export class FrigateCard extends LitElement {
             return [];
           }
           contenders.push(this._getParseErrorPathString(issue.path));
+        } else if (issue.code != 'custom') {
+          contenders.push(this._getParseErrorPathString(issue.path));
         }
       }
     }

src/types.ts

@@ -213,9 +213,9 @@ const customSchema = z
     type: z.string().superRefine((val, ctx) => {
       if (!val.match(/^custom:(?!frigate-card).+/)) {
         ctx.addIssue({
-          code: z.ZodIssueCode.invalid_type,
-          expected: 'string',
-          received: 'string',
+          code: z.ZodIssueCode.custom,
+          message: "Frigate-card custom elements must match specific schemas",
+          fatal: true,
         });
       }
     }),