diff --git a/src/js/gcode-viewer.js b/src/js/gcode-viewer.js
index db2ef44..6f2a004 100644
--- a/src/js/gcode-viewer.js
+++ b/src/js/gcode-viewer.js
@@ -1,152 +1,162 @@
 "use strict";
 
 const entityMap = {
-    "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;",
-    "/": "&#x2F;", "`": "&#x60;", "=": "&#x3D;" };
+  "&": "&amp;",
+  "<": "&lt;",
+  ">": "&gt;",
+  '"': "&quot;",
+  "'": "&#39;",
+  "/": "&#x2F;",
+  "`": "&#x60;",
+  "=": "&#x3D;",
+};
 
 function escapeHTML(s) {
-    return s.replace(/[&<>"'`=\\/]/g, function(c) {
-        return entityMap[c];
-    });
+  return s.replace(/[&<>"'`=\\/]/g, function (c) {
+    return entityMap[c];
+  });
 }
 
 module.exports = {
-    template: "#gcode-viewer-template",
+  template: "#gcode-viewer-template",
 
-    data: function() {
-        return {
-            empty: true,
-            file: "",
-            line: -1
-        };
+  data: function () {
+    return {
+      empty: true,
+      file: "",
+      line: -1,
+    };
+  },
+
+  events: {
+    "gcode-load": function (file) {
+      this.load(file);
     },
-
-    events: {
-        "gcode-load": function(file) {
-            this.load(file);
-        },
-        "gcode-clear": function() {
-            this.clear();
-        },
-        "gcode-reload": function(file) {
-            this.reload(file);
-        },
-        "gcode-line": function(line) {
-            this.update_line(line);
-        }
+    "gcode-clear": function () {
+      this.clear();
     },
-
-    ready: function() {
-        this.clusterize = new Clusterize({
-            rows: [],
-            scrollElem: this.$el.querySelector(".clusterize-scroll"),
-            contentElem: this.$el.querySelector(".clusterize-content"),
-            no_data_text: "GCode view...",
-            callbacks: { clusterChanged: this.highlight }
-        });
+    "gcode-reload": function (file) {
+      this.reload(file);
     },
-
-    attached: function() {
-        if (typeof this.clusterize != "undefined") {
-            this.clusterize.refresh(true);
-        }
+    "gcode-line": function (line) {
+      this.update_line(line);
     },
+  },
 
-    methods: {
-        load: async function(file) {
-            if (file == this.file) {
-                return;
-            }
+  ready: function () {
+    this.clusterize = new Clusterize({
+      rows: [],
+      scrollElem: this.$el.querySelector(".clusterize-scroll"),
+      contentElem: this.$el.querySelector(".clusterize-content"),
+      no_data_text: "GCode view...",
+      callbacks: { clusterChanged: this.highlight },
+    });
+  },
 
-            this.clear();
-            this.file = file;
-            if (!file) {
-                return;
-            }
-
-            const response = await fetch(`/api/file/${file}`, { cache: "no-cache" });
-            const text = await response.text();
-
-            if (text.length > 20e6) {
-                this.clusterize.update([ "File is large - gcode view disabled" ]);
-            } else {
-                const lines = escapeHTML(text.trimRight())
-                    .split(/[\r\n]/)
-                    .map((line, i) => `<li class="ln${i + 1}" contenteditable="true"><b>${i + 1}</b>${line}</li>`);
-
-                this.clusterize.update(lines);
-            }
-
-            this.empty = false;
-
-            Vue.nextTick(this.update_line);
-        },
-
-        clear: function() {
-            this.empty = true;
-            this.file = "";
-            this.line = -1;
-            this.clusterize.clear();
-        },
-
-        reload: function(file) {
-            if (file != this.file) {
-                return;
-            }
-            this.clear();
-            this.load(file);
-        },
-
-        highlight: function() {
-            const highlights = this.$el.querySelectorAll(".highlight");
-            for (const highlight of highlights) {
-                highlight.className = (highlight.className || "")
-                    .split(" ")
-                    .filter(c => c !== "highlight")
-                    .join(" ");
-            }
-
-            const lines = this.$el.querySelectorAll(`.ln${this.line}`);
-            for (const line of lines) {
-                line.className = (line.className || "")
-                    .split(" ")
-                    .filter(c => c !== "highlight")
-                    .concat([ "highlight" ])
-                    .join(" ");
-            }
-        },
-
-        update_line: function(line) {
-            if (typeof line != "undefined") {
-                if (this.line == line) {
-                    return;
-                }
-
-                this.line = line;
-            } else {
-                line = this.line;
-            }
-
-            const totalLines = this.clusterize.getRowsAmount();
-
-            if (line <= 0) {
-                line = 1;
-            }
-
-            if (totalLines < line) {
-                line = totalLines;
-            }
-
-            const scroll = this.$el.querySelector(".clusterize-scroll");
-
-            const lineHeight = scroll.scrollHeight / totalLines;
-            const linesPerPage = Math.floor(scroll.clientHeight / lineHeight);
-            const target = line - 1 - Math.floor(linesPerPage / 2);
-
-            // Update scroll position
-            scroll.scrollTop = target * lineHeight;
-
-            Vue.nextTick(this.highlight);
-        }
+  attached: function () {
+    if (typeof this.clusterize != "undefined") {
+      this.clusterize.refresh(true);
     }
+  },
+
+  methods: {
+    load: async function (file) {
+      if (file == this.file) {
+        return;
+      }
+
+      this.clear();
+      this.file = file;
+      if (!file) {
+        return;
+      }
+
+      const response = await fetch(`/api/file/${file}`, { cache: "no-cache" });
+      if (response.status == 400) {
+        return;
+      }
+      const text = await response.text();
+
+      if (text.length > 20e6) {
+        this.clusterize.update(["File is large - gcode view disabled"]);
+      } else {
+        const lines = escapeHTML(text.trimRight())
+          .split(/[\r\n]/)
+          .map((line, i) => `<li class="ln${i + 1}" contenteditable="true"><b>${i + 1}</b>${line}</li>`);
+
+        this.clusterize.update(lines);
+      }
+
+      this.empty = false;
+
+      Vue.nextTick(this.update_line);
+    },
+
+    clear: function () {
+      this.empty = true;
+      this.file = "";
+      this.line = -1;
+      this.clusterize.clear();
+    },
+
+    reload: function (file) {
+      if (file != this.file) {
+        return;
+      }
+      this.clear();
+      this.load(file);
+    },
+
+    highlight: function () {
+      const highlights = this.$el.querySelectorAll(".highlight");
+      for (const highlight of highlights) {
+        highlight.className = (highlight.className || "")
+          .split(" ")
+          .filter(c => c !== "highlight")
+          .join(" ");
+      }
+
+      const lines = this.$el.querySelectorAll(`.ln${this.line}`);
+      for (const line of lines) {
+        line.className = (line.className || "")
+          .split(" ")
+          .filter(c => c !== "highlight")
+          .concat(["highlight"])
+          .join(" ");
+      }
+    },
+
+    update_line: function (line) {
+      if (typeof line != "undefined") {
+        if (this.line == line) {
+          return;
+        }
+
+        this.line = line;
+      } else {
+        line = this.line;
+      }
+
+      const totalLines = this.clusterize.getRowsAmount();
+
+      if (line <= 0) {
+        line = 1;
+      }
+
+      if (totalLines < line) {
+        line = totalLines;
+      }
+
+      const scroll = this.$el.querySelector(".clusterize-scroll");
+
+      const lineHeight = scroll.scrollHeight / totalLines;
+      const linesPerPage = Math.floor(scroll.clientHeight / lineHeight);
+      const target = line - 1 - Math.floor(linesPerPage / 2);
+
+      // Update scroll position
+      scroll.scrollTop = target * lineHeight;
+
+      Vue.nextTick(this.highlight);
+    },
+  },
 };