diff --git a/src/server/request_parser.cpp b/src/server/request_parser.cpp
index 637924d..97b9117 100644
--- a/src/server/request_parser.cpp
+++ b/src/server/request_parser.cpp
@@ -252,6 +252,9 @@ namespace http::server {
                         return good;
                     }
                     contentLenghtHeader = std::stol(content_len);
+                    if (contentLenghtHeader == 0) {
+                        return good;
+                    }
                     state_ = expecting_payload;
                     if (contentLenghtHeader > HTTP_MAX_PAYLOAD) {
                         return bad;
diff --git a/static/main.html b/static/main.html
index 3c19671..f08f63b 100644
--- a/static/main.html
+++ b/static/main.html
@@ -859,6 +859,7 @@
             },
 
             settingsSubmitBucLnb() {
+                if (this.submitStatus.bucLnb) { return }
                 let query = {
                     "buc.refClk10M": this.param.buc.refClk10M,
                     "buc.powering": parseInt(this.param.buc.powering),
@@ -878,6 +879,9 @@
                     }).then(async (resp) => {
                         this.submitStatus.bucLnb = false
                         this.updateBucLnbSettings(await resp.json())
+                    }).catch((reason) => {
+                        this.submitStatus.bucLnb = false
+                        alert(`Ошибка при применении настроек: ${reason}`)
                     })
                 }
             },
@@ -937,6 +941,9 @@
                 }).then(async (resp) => {
                     this.submitStatus.qos = false
                     this.updateQosSettings(await resp.json())
+                }).catch((reason) => {
+                    this.submitStatus.qos = false
+                    alert(`Ошибка при применении настроек: ${reason}`)
                 })
             },