fix: handle errors when wallet is unreachable

lib/plugins/common/json-rpc.js

@@ -48,18 +48,21 @@ function split (str) {
 }
 
 function parseConf (confPath) {
-  const conf = fs.readFileSync(confPath)
-  const lines = conf.toString().split('\n')
+  try {
+    const conf = fs.readFileSync(confPath)
+    const lines = conf.toString().split('\n')
 
-  const res = {}
-  for (let i = 0; i < lines.length; i++) {
-    const keyVal = split(lines[i])
+    const res = {}
+    for (let i = 0; i < lines.length; i++) {
+      const keyVal = split(lines[i])
 
-    // skip when value is empty
-    if (!keyVal[1]) continue
+      // skip when value is empty
+      if (!keyVal[1]) continue
 
-    res[keyVal[0]] = keyVal[1]
+      res[keyVal[0]] = keyVal[1]
+    }
+    return res
+  } catch (e) {
+    throw new Error('wallet is currently not installed')
   }
-
-  return res
 }