diff --git a/.github/workflows/docker-dev.yml b/.github/workflows/docker-dev.yml
index f374a7010..5b23d4762 100644
--- a/.github/workflows/docker-dev.yml
+++ b/.github/workflows/docker-dev.yml
@@ -45,11 +45,24 @@ jobs:
           KEEP_LAST_N_IMAGES: 5
         run: |
           # Get list of tags
-          TAGS=$(curl -s -u $DOCKER_HUB_USERNAME:$DOCKER_HUB_PASSWORD https://hub.docker.com/v2/repositories/$DOCKER_HUB_REPO/tags/?page_size=100 | jq -r '.results[].name')
+          RESPONSE=$(curl -s -u $DOCKER_HUB_USERNAME:$DOCKER_HUB_PASSWORD -o /tmp/response.json -w "%{http_code}" https://hub.docker.com/v2/repositories/$DOCKER_HUB_REPO/tags/?page_size=100)
+
+          # Check HTTP Status Code
+          if [ "$RESPONSE" -ne 200 ]; then
+              echo "Failed to fetch tags, HTTP Response code is $RESPONSE"
+              cat /tmp/response.json
+              exit 1
+          fi
+
+          # Check for null JSON Response and Extract Tags
+          TAGS=$(jq -r '.results? | if type=="array" then .[].name else empty end' /tmp/response.json)
+
+          # Filter tags with "dev"
+          DEV_TAGS=$(echo "$TAGS" | grep dev)
 
           # Sort tags and delete all except for the most recent N
           COUNTER=0
-          for TAG in $(echo $TAGS | tr " " "\n" | sort -V)
+          for TAG in $(echo $DEV_TAGS | tr " " "\n" | sort -V)
           do
               if [ $COUNTER -ge $KEEP_LAST_N_IMAGES ]
               then
diff --git a/includes/xcal.php b/includes/xcal.php
index 7312fe5c4..b805801f8 100644
--- a/includes/xcal.php
+++ b/includes/xcal.php
@@ -1962,6 +1962,10 @@ function curl_download($url) {
 function parse_ical ( $cal_file, $source = 'file' ) {
   global $errormsg, $importMd5, $tz;
 
+  // Replace instances of 'webcal://' with 'http://' since PHP's curl does not
+  // support it.
+  $cal_file = str_ireplace('webcal://', 'http://', $cal_file);
+
   $importMd5 = '';
   $ical_data = [];
   do_debug ( "in parse_ical, file=$cal_file, source=$source" );