diff --git a/project/composer.json b/project/composer.json
index e5a04581..24d3c9c1 100644
--- a/project/composer.json
+++ b/project/composer.json
@@ -13,7 +13,7 @@
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+        "symfony/symfony": "3.4.*",
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diff --git a/project/composer.lock b/project/composer.lock
index 62e4b885..804335f3 100644
--- a/project/composer.lock
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@@ -4,7 +4,7 @@
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+    "content-hash": "b2e9ac90b90c7307cf5f1942da8838a6",
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@@ -1430,6 +1430,67 @@
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@@ -1667,52 +1728,6 @@
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@@ -2454,6 +2469,160 @@
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+            "description": "Common Container Interface (PHP FIG PSR-11)",
+            "homepage": "https://github.com/php-fig/container",
+            "keywords": [
+                "PSR-11",
+                "container",
+                "container-interface",
+                "container-interop",
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+            "version": "1.0.0",
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+                    "homepage": "http://www.php-fig.org/"
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+            "description": "Common interfaces for HTTP links",
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+                "http",
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+                "psr",
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+                "rest"
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+            "time": "2016-10-28T16:06:13+00:00"
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@@ -2504,6 +2673,57 @@
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+            "license": [
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+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
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+            "description": "Common interfaces for simple caching",
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+            "support": {
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+            "time": "2017-10-23T01:57:42+00:00"
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@@ -3186,162 +3406,6 @@
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@@ -3655,71 +3719,6 @@
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@@ -3786,42 +3785,52 @@
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+            "provide": {
+                "psr/cache-implementation": "1.0",
+                "psr/container-implementation": "1.0",
+                "psr/log-implementation": "1.0",
+                "psr/simple-cache-implementation": "1.0"
+            },
             "replace": {
                 "symfony/asset": "self.version",
                 "symfony/browser-kit": "self.version",
+                "symfony/cache": "self.version",
                 "symfony/class-loader": "self.version",
                 "symfony/config": "self.version",
                 "symfony/console": "self.version",
@@ -3831,6 +3840,7 @@
                 "symfony/dependency-injection": "self.version",
                 "symfony/doctrine-bridge": "self.version",
                 "symfony/dom-crawler": "self.version",
+                "symfony/dotenv": "self.version",
                 "symfony/event-dispatcher": "self.version",
                 "symfony/expression-language": "self.version",
                 "symfony/filesystem": "self.version",
@@ -3839,9 +3849,10 @@
                 "symfony/framework-bundle": "self.version",
                 "symfony/http-foundation": "self.version",
                 "symfony/http-kernel": "self.version",
+                "symfony/inflector": "self.version",
                 "symfony/intl": "self.version",
                 "symfony/ldap": "self.version",
-                "symfony/locale": "self.version",
+                "symfony/lock": "self.version",
                 "symfony/monolog-bridge": "self.version",
                 "symfony/options-resolver": "self.version",
                 "symfony/process": "self.version",
@@ -3857,34 +3868,37 @@
                 "symfony/security-http": "self.version",
                 "symfony/serializer": "self.version",
                 "symfony/stopwatch": "self.version",
-                "symfony/swiftmailer-bridge": "self.version",
                 "symfony/templating": "self.version",
                 "symfony/translation": "self.version",
                 "symfony/twig-bridge": "self.version",
                 "symfony/twig-bundle": "self.version",
                 "symfony/validator": "self.version",
                 "symfony/var-dumper": "self.version",
+                "symfony/web-link": "self.version",
                 "symfony/web-profiler-bundle": "self.version",
+                "symfony/web-server-bundle": "self.version",
+                "symfony/workflow": "self.version",
                 "symfony/yaml": "self.version"
             },
             "require-dev": {
+                "cache/integration-tests": "dev-master",
                 "doctrine/annotations": "~1.0",
-                "doctrine/data-fixtures": "1.0.*",
+                "doctrine/cache": "~1.6",
+                "doctrine/data-fixtures": "^1.1",
                 "doctrine/dbal": "~2.4",
-                "doctrine/doctrine-bundle": "~1.2",
+                "doctrine/doctrine-bundle": "~1.4",
                 "doctrine/orm": "~2.4,>=2.4.5",
-                "egulias/email-validator": "~1.2,>=1.2.1",
+                "egulias/email-validator": "~1.2,>=1.2.8|~2.0",
                 "monolog/monolog": "~1.11",
                 "ocramius/proxy-manager": "~0.4|~1.0|~2.0",
-                "phpdocumentor/reflection": "^1.0.7",
-                "sensio/framework-extra-bundle": "^3.0.2",
-                "symfony/phpunit-bridge": "~3.4|~4.0"
+                "phpdocumentor/reflection-docblock": "^3.0|^4.0",
+                "predis/predis": "~1.0",
+                "symfony/phpunit-bridge": "^5.2",
+                "symfony/security-acl": "~2.8|~3.0"
             },
             "type": "library",
             "extra": {
-                "branch-alias": {
-                    "dev-master": "2.8-dev"
-                }
+                "branch-version": "3.4"
             },
             "autoload": {
                 "psr-4": {
@@ -3893,7 +3907,6 @@
                     "Symfony\\Bridge\\Twig\\": "src/Symfony/Bridge/Twig/",
                     "Symfony\\Bridge\\Monolog\\": "src/Symfony/Bridge/Monolog/",
                     "Symfony\\Bridge\\Doctrine\\": "src/Symfony/Bridge/Doctrine/",
-                    "Symfony\\Bridge\\Swiftmailer\\": "src/Symfony/Bridge/Swiftmailer/",
                     "Symfony\\Bridge\\ProxyManager\\": "src/Symfony/Bridge/ProxyManager/"
                 },
                 "classmap": [
@@ -3924,9 +3937,23 @@
             ],
             "support": {
                 "issues": "https://github.com/symfony/symfony/issues",
-                "source": "https://github.com/symfony/symfony/tree/v2.8.52"
+                "source": "https://github.com/symfony/symfony/tree/v3.4.49"
             },
-            "time": "2019-11-13T08:36:42+00:00"
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-05-19T12:07:19+00:00"
         },
         {
             "name": "twig/extensions",
@@ -4373,7 +4400,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "digitick/sepa-xml": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {