Try it on the clientside instead

back/admin.Dockerfile

@@ -6,7 +6,7 @@ ENV ADMIN_EMAIL='me@example.com'
 
 # Install deps
 RUN apt-get update && apt-get install --yes \
-	sudo curl apache2 openssl wireguard-tools dnsutils ipv6calc jq qrencode \
+	sudo curl apache2 openssl wireguard-tools dnsutils ipv6calc jq \
 	&& rm -rf /var/lib/apt/lists/*
 
 # Create dirs and temp files

back/dashboard.Dockerfile

@@ -6,7 +6,7 @@ ENV ADMIN_EMAIL='me@example.com'
 
 # Install deps
 RUN apt-get update && apt-get install --yes \
-	sudo curl apache2 openssl wireguard-tools dnsutils ipv6calc jq qrencode \
+	sudo curl apache2 openssl wireguard-tools dnsutils ipv6calc jq \
 	&& rm -rf /var/lib/apt/lists/*
 
 # Create dirs and temp files

back/lib/dashboard/peer/add

@@ -159,5 +159,4 @@ while IFS=$'\t' read -r server_hostname server_ipv4 server_ipv6 server_pubkey se
 	fi
 done <"${SERVERS_FILE}"
 wg_config="[Interface] # ${hostname}.${username}.${TLD}\nPrivateKey=${privkey:?}\nAddress=${address:?}\n${WG_DNS}\n${server_blocks:?}"
-qr_code="$(qrencode -t ansiutf8 <<<"${wg_config}")"
-printf '%s\n\n%s\n' "${wg_config}" "${qr_code}" | "${LIB_DIR}/http_res" 202
+<<<"${wg_config}" "${LIB_DIR}/http_res" 202

front/admin.Dockerfile

@@ -1,3 +1,3 @@
 FROM httpd:2.4
 COPY admin.html /usr/local/apache2/htdocs/index.html
-COPY admin.js knockout.min.js /usr/local/apache2/htdocs/
+COPY admin.js knockout.min.js qrcode.min.js /usr/local/apache2/htdocs/

front/admin.html

@@ -49,8 +49,10 @@
 
 	<br><hr>
 	<pre data-bind="text:newConfigText"></pre>
+	<div id="qrcode"></div>
 
 	<script src="/knockout.min.js" integrity="sha512-vs7+jbztHoMto5Yd/yinM4/y2DOkPLt0fATcN+j+G4ANY2z4faIzZIOMkpBmWdcxt+596FemCh9M18NUJTZwvw=="></script>
+	<script src="/qrcode.min.js" integrity="sha512-CNgIRecGo7nphbeZ04Sc13ka07paqdeTu0WR1IM4kNcpmBAUSHSQX0FslNhTDadL4O5SAGapGt4FodqL8My0mA=="></script>
 	<script src="/admin.js"></script>
 </body>
 </html>

front/admin.js

@@ -107,6 +107,7 @@ function PeerList() {
 					cantDelete: true,
 				}))
 				self.newConfigText(parsedRes)
+				new QRCode(document.getElementById('qrcode'),parsedRes)
 			}
 		}
 	}
@@ -184,6 +185,7 @@ function PeerList() {
 					cantDelete: true,
 				}))
 				self.newConfigText(parsedRes)
+				new QRCode(document.getElementById('qrcode'),parsedRes)
 			}
 		}
 	}

front/dashboard.Dockerfile

@@ -1,3 +1,3 @@
 FROM httpd:2.4
 COPY dashboard.html /usr/local/apache2/htdocs/index.html
-COPY dashboard.js knockout.min.js /usr/local/apache2/htdocs/
+COPY dashboard.js knockout.min.js qrcode.min.js /usr/local/apache2/htdocs/

front/dashboard.html

@@ -28,9 +28,11 @@
 	<p>After clicking "Add", the new peer's config will appear below.  Copy and paste it into your wireguard client and start the service.  <b>This configuration will not be shown again!</b>If you lose the config, you will need to delete the peer and recreate it.  </p>
 	<hr>
 	<pre data-bind="text:newConfigText"></pre>
+	<div id="qrcode"></div>
 
 	<script src="/knockout.min.js" integrity="sha512-vs7+jbztHoMto5Yd/yinM4/y2DOkPLt0fATcN+j+G4ANY2z4faIzZIOMkpBmWdcxt+596FemCh9M18NUJTZwvw==
 "></script>
+	<script src="/qrcode.min.js" integrity="sha512-CNgIRecGo7nphbeZ04Sc13ka07paqdeTu0WR1IM4kNcpmBAUSHSQX0FslNhTDadL4O5SAGapGt4FodqL8My0mA=="></script>
 	<script src="/dashboard.js"></script>
 </body>
 </html>

front/dashboard.js

@@ -86,6 +86,7 @@ function PeerList() {
 					cantDelete: true,
 				}))
 				self.newConfigText(parsedRes)
+				new QRCode(document.getElementById('qrcode'),parsedRes)
 			}
 		}
 	}