bug fix

src/modules/exam/components/ApplyContent.vue

@@ -1093,7 +1093,7 @@ export default {
       const usedCards = this.paperAttachments
         .filter(item => item.cardId && item.used)
         .map(item => item.name);
-      if (!usedCards.length) {
+      if (usedCards.length) {
         this.$message.error(`${usedCards.join()}卷选择的题卡已经被使用过！`);
         return;
       }

src/modules/exam/components/ModifyTaskPaper.vue

@@ -574,7 +574,7 @@ export default {
       const usedCards = this.paperAttachments
         .filter(item => item.cardId && item.used)
         .map(item => item.name);
-      if (!usedCards.length) {
+      if (usedCards.length) {
         this.$message.error(`${usedCards.join()}卷选择的题卡已经被使用过！`);
         return;
       }

src/modules/exam/components/createExamAndPrintTask/InfoExamTask.vue

@@ -651,7 +651,7 @@ export default {
       const usedCards = this.paperAttachments
         .filter(item => item.cardId && item.used)
         .map(item => item.name);
-      if (!usedCards.length) {
+      if (usedCards.length) {
         this.$message.error(`${usedCards.join()}卷选择的题卡已经被使用过！`);
         return Promise.reject();
       }