diff --git a/lib/db.js b/lib/db.js
index 7abbe9df..2fdc49bf 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -1,6 +1,8 @@
 import { PrismaClient } from '@prisma/client';
 
-const prisma = new PrismaClient();
+const prisma = new PrismaClient({
+  log: [process.env.NODE_ENV !== 'production' && 'query'],
+});
 
 export async function runQuery(query) {
   return query
diff --git a/lib/session.js b/lib/session.js
index daafffd5..d7f08cbe 100644
--- a/lib/session.js
+++ b/lib/session.js
@@ -1,7 +1,7 @@
 import { getWebsite, getSession, createSession } from 'lib/db';
 import { getCountry, getDevice, getIpAddress, hash, isValidSession } from 'lib/utils';
 
-export default async function checkSession(req) {
+export default async req => {
   const { payload } = req.body;
   const { session } = payload;
 
@@ -19,7 +19,7 @@ export default async function checkSession(req) {
 
     if (website) {
       const { website_id } = website;
-      const session_uuid = hash(`${website_id}${hostname}${ip}${userAgent}${os}`);
+      const session_uuid = hash(website_id, hostname, ip, userAgent, os);
 
       let session = await getSession(session_uuid);
 
@@ -46,4 +46,4 @@ export default async function checkSession(req) {
       ].join(':');
     }
   }
-}
+};
diff --git a/public/umami.js b/public/umami.js
index d18ffc28..5e4f674c 100644
--- a/public/umami.js
+++ b/public/umami.js
@@ -1 +1 @@
-!function(){"use strict";function e(e){var t=this.constructor;return this.then((function(n){return t.resolve(e()).then((function(){return n}))}),(function(n){return t.resolve(e()).then((function(){return t.reject(n)}))}))}var t=setTimeout;function n(e){return Boolean(e&&void 0!==e.length)}function r(){}function o(e){if(!(this instanceof o))throw new TypeError("Promises must be constructed via new");if("function"!=typeof e)throw new TypeError("not a function");this._state=0,this._handled=!1,this._value=void 0,this._deferreds=[],f(e,this)}function i(e,t){for(;3===e._state;)e=e._value;0!==e._state?(e._handled=!0,o._immediateFn((function(){var n=1===e._state?t.onFulfilled:t.onRejected;if(null!==n){var r;try{r=n(e._value)}catch(e){return void s(t.promise,e)}u(t.promise,r)}else(1===e._state?u:s)(t.promise,e._value)}))):e._deferreds.push(t)}function u(e,t){try{if(t===e)throw new TypeError("A promise cannot be resolved with itself.");if(t&&("object"==typeof t||"function"==typeof t)){var n=t.then;if(t instanceof o)return e._state=3,e._value=t,void a(e);if("function"==typeof n)return void f((r=n,i=t,function(){r.apply(i,arguments)}),e)}e._state=1,e._value=t,a(e)}catch(t){s(e,t)}var r,i}function s(e,t){e._state=2,e._value=t,a(e)}function a(e){2===e._state&&0===e._deferreds.length&&o._immediateFn((function(){e._handled||o._unhandledRejectionFn(e._value)}));for(var t=0,n=e._deferreds.length;t<n;t++)i(e,e._deferreds[t]);e._deferreds=null}function c(e,t,n){this.onFulfilled="function"==typeof e?e:null,this.onRejected="function"==typeof t?t:null,this.promise=n}function f(e,t){var n=!1;try{e((function(e){n||(n=!0,u(t,e))}),(function(e){n||(n=!0,s(t,e))}))}catch(e){if(n)return;n=!0,s(t,e)}}o.prototype["catch"]=function(e){return this.then(null,e)},o.prototype.then=function(e,t){var n=new this.constructor(r);return i(this,new c(e,t,n)),n},o.prototype["finally"]=e,o.all=function(e){return new o((function(t,r){if(!n(e))return r(new TypeError("Promise.all accepts an array"));var o=Array.prototype.slice.call(e);if(0===o.length)return t([]);var i=o.length;function u(e,n){try{if(n&&("object"==typeof n||"function"==typeof n)){var s=n.then;if("function"==typeof s)return void s.call(n,(function(t){u(e,t)}),r)}o[e]=n,0==--i&&t(o)}catch(e){r(e)}}for(var s=0;s<o.length;s++)u(s,o[s])}))},o.resolve=function(e){return e&&"object"==typeof e&&e.constructor===o?e:new o((function(t){t(e)}))},o.reject=function(e){return new o((function(t,n){n(e)}))},o.race=function(e){return new o((function(t,r){if(!n(e))return r(new TypeError("Promise.race accepts an array"));for(var i=0,u=e.length;i<u;i++)o.resolve(e[i]).then(t,r)}))},o._immediateFn="function"==typeof setImmediate&&function(e){setImmediate(e)}||function(e){t(e,0)},o._unhandledRejectionFn=function(e){"undefined"!=typeof console&&console&&console.warn("Possible Unhandled Promise Rejection:",e)};var l=function(){if("undefined"!=typeof self)return self;if("undefined"!=typeof window)return window;if("undefined"!=typeof global)return global;throw new Error("unable to locate global object")}();"Promise"in l?l.Promise.prototype["finally"]||(l.Promise.prototype["finally"]=e):l["Promise"]=o,self.fetch||(self.fetch=function(e,t){return t=t||{},new Promise((function(n,r){var o=new XMLHttpRequest,i=[],u=[],s={},a=function(){return{ok:2==(o.status/100|0),statusText:o.statusText,status:o.status,url:o.responseURL,text:function(){return Promise.resolve(o.responseText)},json:function(){return Promise.resolve(JSON.parse(o.responseText))},blob:function(){return Promise.resolve(new Blob([o.response]))},clone:a,headers:{keys:function(){return i},entries:function(){return u},get:function(e){return s[e.toLowerCase()]},has:function(e){return e.toLowerCase()in s}}}};for(var c in o.open(t.method||"get",e,!0),o.onload=function(){o.getAllResponseHeaders().replace(/^(.*?):[^\S\n]*([\s\S]*?)$/gm,(function(e,t,n){i.push(t=t.toLowerCase()),u.push([t,n]),s[t]=s[t]?s[t]+","+n:n})),n(a())},o.onerror=r,o.withCredentials="include"==t.credentials,t.headers)o.setRequestHeader(c,t.headers[c]);o.send(t.body||null)}))}),function(e,t){var n=e.screen,r=n.width,o=n.height,i=e.navigator.language,u=e.location,s=u.hostname,a=u.pathname,c=u.search,f=e.localStorage,l=e.document,h=e.history,p=l.querySelector("script[data-website-id]"),d=p&&p.getAttribute("data-website-id"),v=new URL(p.src).origin,y=r+"x"+o,m=[],w=""+a+c,_=l.referrer,g=function(e,n){var r={session:f.getItem(t),url:w,referrer:_,website:d,hostname:s,screen:y,language:i};return n&&Object.keys(n).forEach((function(e){r[e]=n[e]})),function(e,t){return fetch(e,{method:"post",cache:"no-cache",headers:{Accept:"application/json","Content-Type":"application/json"},body:JSON.stringify(t)}).then((function(e){return e.json()}))}(v+"/api/collect",{type:e,payload:r}).then((function(e){var n=e.ok,r=e.session;return n&&r&&f.setItem(t,r)}))},b=function(){return g("pageview").then((function(){return setTimeout(T,300)}))},j=function(e,t,n){E(),_=w,w=n,b()},P=function(e,t){var n=h[e];return function(e,r,o){var i=[e,r,o];return t.apply(null,i),n.apply(h,i)}};h.pushState=P("pushState",j),h.replaceState=P("replaceState",j);var E=function(){m.forEach((function(e){var t=e[0],n=e[1],r=e[2];t.removeEventListener(n,r,!0)})),m.length=0},T=function(){l.querySelectorAll("[class*='umami--']").forEach((function(e){e.className.split(" ").forEach((function(t){if(/^umami--/.test(t)){var n=t.split("--"),r=n[1],o=n[2];if(r&&o){var i=function(){return g("event",{event_type:r,event_value:o})};m.push([e,r,i]),e.addEventListener(r,i,!0)}}}))}))};b()}(window,"umami.session")}();
+!function(){"use strict";function e(e){var t=this.constructor;return this.then((function(n){return t.resolve(e()).then((function(){return n}))}),(function(n){return t.resolve(e()).then((function(){return t.reject(n)}))}))}var t=setTimeout;function n(e){return Boolean(e&&void 0!==e.length)}function r(){}function o(e){if(!(this instanceof o))throw new TypeError("Promises must be constructed via new");if("function"!=typeof e)throw new TypeError("not a function");this._state=0,this._handled=!1,this._value=void 0,this._deferreds=[],f(e,this)}function i(e,t){for(;3===e._state;)e=e._value;0!==e._state?(e._handled=!0,o._immediateFn((function(){var n=1===e._state?t.onFulfilled:t.onRejected;if(null!==n){var r;try{r=n(e._value)}catch(e){return void s(t.promise,e)}u(t.promise,r)}else(1===e._state?u:s)(t.promise,e._value)}))):e._deferreds.push(t)}function u(e,t){try{if(t===e)throw new TypeError("A promise cannot be resolved with itself.");if(t&&("object"==typeof t||"function"==typeof t)){var n=t.then;if(t instanceof o)return e._state=3,e._value=t,void a(e);if("function"==typeof n)return void f((r=n,i=t,function(){r.apply(i,arguments)}),e)}e._state=1,e._value=t,a(e)}catch(t){s(e,t)}var r,i}function s(e,t){e._state=2,e._value=t,a(e)}function a(e){2===e._state&&0===e._deferreds.length&&o._immediateFn((function(){e._handled||o._unhandledRejectionFn(e._value)}));for(var t=0,n=e._deferreds.length;t<n;t++)i(e,e._deferreds[t]);e._deferreds=null}function c(e,t,n){this.onFulfilled="function"==typeof e?e:null,this.onRejected="function"==typeof t?t:null,this.promise=n}function f(e,t){var n=!1;try{e((function(e){n||(n=!0,u(t,e))}),(function(e){n||(n=!0,s(t,e))}))}catch(e){if(n)return;n=!0,s(t,e)}}o.prototype["catch"]=function(e){return this.then(null,e)},o.prototype.then=function(e,t){var n=new this.constructor(r);return i(this,new c(e,t,n)),n},o.prototype["finally"]=e,o.all=function(e){return new o((function(t,r){if(!n(e))return r(new TypeError("Promise.all accepts an array"));var o=Array.prototype.slice.call(e);if(0===o.length)return t([]);var i=o.length;function u(e,n){try{if(n&&("object"==typeof n||"function"==typeof n)){var s=n.then;if("function"==typeof s)return void s.call(n,(function(t){u(e,t)}),r)}o[e]=n,0==--i&&t(o)}catch(e){r(e)}}for(var s=0;s<o.length;s++)u(s,o[s])}))},o.resolve=function(e){return e&&"object"==typeof e&&e.constructor===o?e:new o((function(t){t(e)}))},o.reject=function(e){return new o((function(t,n){n(e)}))},o.race=function(e){return new o((function(t,r){if(!n(e))return r(new TypeError("Promise.race accepts an array"));for(var i=0,u=e.length;i<u;i++)o.resolve(e[i]).then(t,r)}))},o._immediateFn="function"==typeof setImmediate&&function(e){setImmediate(e)}||function(e){t(e,0)},o._unhandledRejectionFn=function(e){"undefined"!=typeof console&&console&&console.warn("Possible Unhandled Promise Rejection:",e)};var l=function(){if("undefined"!=typeof self)return self;if("undefined"!=typeof window)return window;if("undefined"!=typeof global)return global;throw new Error("unable to locate global object")}();"Promise"in l?l.Promise.prototype["finally"]||(l.Promise.prototype["finally"]=e):l["Promise"]=o,self.fetch||(self.fetch=function(e,t){return t=t||{},new Promise((function(n,r){var o=new XMLHttpRequest,i=[],u=[],s={},a=function(){return{ok:2==(o.status/100|0),statusText:o.statusText,status:o.status,url:o.responseURL,text:function(){return Promise.resolve(o.responseText)},json:function(){return Promise.resolve(JSON.parse(o.responseText))},blob:function(){return Promise.resolve(new Blob([o.response]))},clone:a,headers:{keys:function(){return i},entries:function(){return u},get:function(e){return s[e.toLowerCase()]},has:function(e){return e.toLowerCase()in s}}}};for(var c in o.open(t.method||"get",e,!0),o.onload=function(){o.getAllResponseHeaders().replace(/^(.*?):[^\S\n]*([\s\S]*?)$/gm,(function(e,t,n){i.push(t=t.toLowerCase()),u.push([t,n]),s[t]=s[t]?s[t]+","+n:n})),n(a())},o.onerror=r,o.withCredentials="include"==t.credentials,t.headers)o.setRequestHeader(c,t.headers[c]);o.send(t.body||null)}))}),function(e,t){var n=e.screen,r=n.width,o=n.height,i=e.navigator.language,u=e.location,s=u.hostname,a=u.pathname,c=u.search,f=e.localStorage,l=e.document,h=e.history,p=l.querySelector("script[data-website-id]"),d=p&&p.getAttribute("data-website-id"),v=new URL(p.src).origin,y=r+"x"+o,m=[],w=""+a+c,_=l.referrer,g=function(e,n){var r={session:f.getItem(t),url:w,referrer:_,website:d,hostname:s,screen:y,language:i};return n&&Object.keys(n).forEach((function(e){r[e]=n[e]})),function(e,t){return fetch(e,{method:"post",cache:"no-cache",headers:{Accept:"application/json","Content-Type":"application/json"},body:JSON.stringify(t)}).then((function(e){return e.json()}))}(v+"/api/collect",{type:e,payload:r}).then((function(e){var n=e.ok,r=e.session;return n&&r&&f.setItem(t,r)}))},b=function(){return g("pageview").then((function(){return setTimeout(T,300)}))},j=function(e,t,n){E(),_=w,w=n,b()},P=function(e,t){var n=h[e];return function(e,r,o){var i=[e,r,o];return t.apply(null,i),n.apply(h,i)}};h.pushState=P("pushState",j),h.replaceState=P("replaceState",j);var E=function(){m.forEach((function(e){var t=e[0],n=e[1],r=e[2];t&&t.removeEventListener(n,r,!0)})),m.length=0},T=function(){l.querySelectorAll("[class*='umami--']").forEach((function(e){e.className.split(" ").forEach((function(t){if(/^umami--([a-z]+)--([a-z0-9_]+[a-z0-9-_]+)$/.test(t)){var n=t.split("--"),r=n[1],o=n[2],i=function(){return g("event",{event_type:r,event_value:o})};m.push([e,r,i]),e.addEventListener(r,i,!0)}}))}))};b()}(window,"umami.session")}();
diff --git a/rollup.config.js b/rollup.config.js
index 8514fde9..cbd4a78d 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -1,6 +1,5 @@
 import 'dotenv/config';
 import buble from '@rollup/plugin-buble';
-import replace from '@rollup/plugin-replace';
 import { nodeResolve } from '@rollup/plugin-node-resolve';
 import { terser } from 'rollup-plugin-terser';
 
@@ -10,12 +9,5 @@ export default {
     file: 'public/umami.js',
     format: 'iife',
   },
-  plugins: [
-    replace({
-      'process.env.UMAMI_URL': JSON.stringify(process.env.UMAMI_URL),
-    }),
-    nodeResolve(),
-    buble(),
-    terser({ compress: { evaluate: false } }),
-  ],
+  plugins: [nodeResolve(), buble(), terser({ compress: { evaluate: false } })],
 };
diff --git a/scripts/umami/index.js b/scripts/umami/index.js
index f27bc032..cb9ab31b 100644
--- a/scripts/umami/index.js
+++ b/scripts/umami/index.js
@@ -73,7 +73,9 @@ import 'unfetch/polyfill';
     const orig = history[type];
     return (state, title, url) => {
       const args = [state, title, url];
+
       cb.apply(null, args);
+
       return orig.apply(history, args);
     };
   };
@@ -85,7 +87,7 @@ import 'unfetch/polyfill';
 
   const removeEvents = () => {
     listeners.forEach(([element, type, listener]) => {
-      element.removeEventListener(type, listener, true);
+      element && element.removeEventListener(type, listener, true);
     });
     listeners.length = 0;
   };
@@ -93,13 +95,12 @@ import 'unfetch/polyfill';
   const loadEvents = () => {
     document.querySelectorAll("[class*='umami--']").forEach(element => {
       element.className.split(' ').forEach(className => {
-        if (/^umami--/.test(className)) {
+        if (/^umami--([a-z]+)--([a-z0-9_]+[a-z0-9-_]+)$/.test(className)) {
           const [, type, value] = className.split('--');
-          if (type && value) {
-            const listener = () => pageEvent(type, value);
-            listeners.push([element, type, listener]);
-            element.addEventListener(type, listener, true);
-          }
+          const listener = () => pageEvent(type, value);
+
+          listeners.push([element, type, listener]);
+          element.addEventListener(type, listener, true);
         }
       });
     });
diff --git a/sql/schema.postgresql.sql b/sql/schema.postgresql.sql
index 8076c1fa..e3c740bf 100644
--- a/sql/schema.postgresql.sql
+++ b/sql/schema.postgresql.sql
@@ -38,5 +38,12 @@ create table event (
 );
 
 create index on session(created_at);
+create index on session(website_id);
+
 create index on pageview(created_at);
-create index on event(created_at);
\ No newline at end of file
+create index on pageview(website_id);
+create index on pageview(session_id);
+
+create index on event(created_at);
+create index on event(website_id);
+create index on event(session_id);
\ No newline at end of file