Added some missing codes.

Author: PaulDalek

lib/browser.js

@@ -244,7 +244,7 @@ export async function newPage(poolResource) {
 
   // Throw an error in case of no connected browser
   if (!browser || !browser.connected) {
-    throw new ExportError(`[browser] Browser is not yet connected.`, 400);
+    throw new ExportError(`[browser] Browser is not yet connected.`, 500);
   }
 
   // Create a page

lib/cache.js

@@ -140,7 +140,8 @@ export const fetchAndProcessScript = async (
 
   if (shouldThrowError) {
     throw new ExportError(
-      `Could not fetch the ${script}.js. The script might not exist in the requested version (status code: ${response.statusCode}).`
+      `Could not fetch the ${script}.js. The script might not exist in the requested version (status code: ${response.statusCode}).`,
+      500
     ).setError(response);
   } else {
     log(
@@ -186,9 +187,10 @@ export const fetchScripts = async (
         port: proxyPort
       });
     } catch (error) {
-      throw new ExportError('[cache] Could not create a Proxy Agent.').setError(
-        error
-      );
+      throw new ExportError(
+        '[cache] Could not create a Proxy Agent.',
+        500
+      ).setError(error);
     }
   }
 
@@ -270,7 +272,8 @@ export const updateCache = async (
     return fetchedModules;
   } catch (error) {
     throw new ExportError(
-      '[cache] Unable to update the local Highcharts cache.'
+      '[cache] Unable to update the local Highcharts cache.',
+      500
     ).setError(error);
   }
 };