diff --git a/acme.sh b/acme.sh
index fd29e322..e6985e93 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1473,11 +1473,16 @@ issue() {
   _savedomainconf  "Le_NextRenewTimeStr"  "$Le_NextRenewTimeStr"
 
 
-  installcert $Le_Domain  "$Le_RealCertPath" "$Le_RealKeyPath" "$Le_RealCACertPath" "$Le_ReloadCmd" "$Le_RealFullChainPath"
-  if [ "$?" = "9" ] ; then
+  _output="$(installcert $Le_Domain  "$Le_RealCertPath" "$Le_RealKeyPath" "$Le_RealCACertPath" "$Le_ReloadCmd" "$Le_RealFullChainPath" 2>&1)"
+  _ret="$?"
+  if [ "$_ret" = "9" ] ; then
     #ignore the empty install error.
     return 0
   fi
+  if [ "$_ret" != "0" ] ; then
+    _err "$_output"
+    return 1
+  fi
 }
 
 renew() {
diff --git a/dnsapi/dns_cf.sh b/dnsapi/dns_cf.sh
index 2aac3404..2c7f53f9 100755
--- a/dnsapi/dns_cf.sh
+++ b/dnsapi/dns_cf.sh
@@ -102,7 +102,7 @@ _get_root() {
       return 1
     fi
     
-    if printf $response | grep \"name\":\"$h\" ; then
+    if printf $response | grep \"name\":\"$h\" >/dev/null ; then
       _domain_id=$(printf "$response" | grep -o \"id\":\"[^\"]*\" | head -1 | cut -d : -f 2 | tr -d \")
       if [ "$_domain_id" ] ; then
         _sub_domain=$(printf $domain | cut -d . -f 1-$p)
diff --git a/dnsapi/dns_cx.sh b/dnsapi/dns_cx.sh
index dc9c532b..53a277e5 100644
--- a/dnsapi/dns_cx.sh
+++ b/dnsapi/dns_cx.sh
@@ -144,7 +144,7 @@ _get_root() {
       return 1;
     fi
 
-    if printf "$response" | grep "$h." ; then
+    if printf "$response" | grep "$h." >/dev/null ; then
       seg=$(printf "$response" | grep -o "{[^{]*$h\.[^}]*\}" )
       _debug seg "$seg"
       _domain_id=$(printf "$seg" | grep -o \"id\":\"[^\"]*\" | cut -d : -f 2 | tr -d \")
diff --git a/dnsapi/dns_dp.sh b/dnsapi/dns_dp.sh
index 510384ab..b267db8b 100644
--- a/dnsapi/dns_dp.sh
+++ b/dnsapi/dns_dp.sh
@@ -152,7 +152,7 @@ _get_root() {
       return 1
     fi
     
-    if printf "$response" | grep "Action completed successful" ; then
+    if printf "$response" | grep "Action completed successful" >/dev/null ; then
       _domain_id=$(printf "$response" | grep -o \"id\":\"[^\"]*\" | cut -d : -f 2 | tr -d \")
       _debug _domain_id "$_domain_id"
       if [ "$_domain_id" ] ; then