diff --git a/scripts/Actions/Search.ts b/scripts/Actions/Search.ts
index 51719334..e25128e5 100644
--- a/scripts/Actions/Search.ts
+++ b/scripts/Actions/Search.ts
@@ -17,18 +17,14 @@ var correctResponseRendered = {
 	"company": false
 }
 
+// Search types
+var searchTypes = Object.keys(correctResponseRendered)
+
 // Save old term to compare
 var oldTerm = ""
 
 // Containers for all the search results
-var animeSearchResults: HTMLElement
-var characterSearchResults: HTMLElement
-var postsSearchResults: HTMLElement
-var threadsSearchResults: HTMLElement
-var soundtrackSearchResults: HTMLElement
-var userSearchResults: HTMLElement
-var amvSearchResults: HTMLElement
-var companySearchResults: HTMLElement
+var results = new Map<string, HTMLElement>()
 
 // Delay before a request is sent
 const searchDelay = 140
@@ -60,14 +56,9 @@ export async function search(arn: AnimeNotifier, search: HTMLInputElement, evt?:
 	oldTerm = term
 
 	// Reset
-	correctResponseRendered.anime = false
-	correctResponseRendered.character = false
-	correctResponseRendered.posts = false
-	correctResponseRendered.threads = false
-	correctResponseRendered.soundtrack = false
-	correctResponseRendered.user = false
-	correctResponseRendered.amv = false
-	correctResponseRendered.company = false
+	for(let key of searchTypes) {
+		correctResponseRendered[key] = false
+	}
 
 	// Set browser URL
 	let url = "/search/" + term
@@ -109,15 +100,11 @@ export async function search(arn: AnimeNotifier, search: HTMLInputElement, evt?:
 			return
 		}
 
-		if(!animeSearchResults) {
-			animeSearchResults = document.getElementById("anime-search-results")
-			characterSearchResults = document.getElementById("character-search-results")
-			postsSearchResults = document.getElementById("posts-search-results")
-			threadsSearchResults = document.getElementById("threads-search-results")
-			soundtrackSearchResults = document.getElementById("soundtrack-search-results")
-			userSearchResults = document.getElementById("user-search-results")
-			amvSearchResults = document.getElementById("amv-search-results")
-			companySearchResults = document.getElementById("company-search-results")
+		if(!results["anime"]) {
+			for(let key of searchTypes) {
+				results[key] = document.getElementById(`${key}-search-results`)
+			}
+
 			searchPageTitle = document.getElementsByTagName("h1")[0]
 		}
 
@@ -129,9 +116,9 @@ export async function search(arn: AnimeNotifier, search: HTMLInputElement, evt?:
 			return
 		}
 
-		// Start searching
+		// Start searching anime
 		fetch("/_/anime-search/" + term, fetchOptions)
-		.then(showResponseInElement(arn, url, "anime", animeSearchResults))
+		.then(showResponseInElement(arn, url, "anime", results["anime"]))
 		.catch(console.error)
 
 		requestIdleCallback(() => {
@@ -140,33 +127,16 @@ export async function search(arn: AnimeNotifier, search: HTMLInputElement, evt?:
 				return
 			}
 
-			fetch("/_/character-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "character", characterSearchResults))
-			.catch(console.error)
+			// Search the other types (everything except anime)
+			for(let key of searchTypes) {
+				if(key === "anime") {
+					continue
+				}
 
-			fetch("/_/posts-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "posts", postsSearchResults))
-			.catch(console.error)
-
-			fetch("/_/threads-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "threads", threadsSearchResults))
-			.catch(console.error)
-
-			fetch("/_/soundtrack-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "soundtrack", soundtrackSearchResults))
-			.catch(console.error)
-
-			fetch("/_/user-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "user", userSearchResults))
-			.catch(console.error)
-
-			fetch("/_/amv-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "amv", amvSearchResults))
-			.catch(console.error)
-
-			fetch("/_/company-search/" + term, fetchOptions)
-			.then(showResponseInElement(arn, url, "company", companySearchResults))
-			.catch(console.error)
+				fetch(`/_/${key}-search/` + term, fetchOptions)
+				.then(showResponseInElement(arn, url, key, results[key]))
+				.catch(console.error)
+			}
 		})
 	} catch(err) {
 		console.error(err)
@@ -180,9 +150,9 @@ function showResponseInElement(arn: AnimeNotifier, url: string, typeName: string
 		let html = await response.text()
 
 		if(html.includes("no-search-results")) {
-			Diff.mutations.queue(() => element.parentElement.classList.add("search-section-disabled"))
+			Diff.mutations.queue(() => (element.parentElement as HTMLElement).classList.add("search-section-disabled"))
 		} else {
-			Diff.mutations.queue(() => element.parentElement.classList.remove("search-section-disabled"))
+			Diff.mutations.queue(() => (element.parentElement as HTMLElement).classList.remove("search-section-disabled"))
 		}
 
 		if(arn.app.currentPath !== url) {
@@ -236,7 +206,6 @@ export function searchBySpeech(arn: AnimeNotifier, element: HTMLElement) {
 	recognition.onend = e => {
 		searchInput.placeholder = oldPlaceholder
 		element.classList.remove("speech-listening")
-		recognition = null
 	}
 
 	// Focus search field
diff --git a/scripts/Actions/Serialization.ts b/scripts/Actions/Serialization.ts
index cb2a2f64..f212558f 100644
--- a/scripts/Actions/Serialization.ts
+++ b/scripts/Actions/Serialization.ts
@@ -3,11 +3,16 @@ import { applyTheme } from "./Theme"
 
 // Save new data from an input field
 export async function save(arn: AnimeNotifier, input: HTMLElement) {
+	if(!input.dataset.field) {
+		console.error("Input element missing data-field:", input)
+		return
+	}
+
 	let obj = {}
 	let isContentEditable = input.isContentEditable
 	let value = isContentEditable ? input.textContent : (input as HTMLInputElement).value
 
-	if(value === undefined) {
+	if(value === undefined || value === null) {
 		return
 	}
 
@@ -61,6 +66,11 @@ export async function save(arn: AnimeNotifier, input: HTMLElement) {
 
 // Enable (bool field)
 export async function enable(arn: AnimeNotifier, button: HTMLButtonElement) {
+	if(!button.dataset.field) {
+		console.error("Button missing data-field:", button)
+		return
+	}
+
 	let obj = {}
 	let apiEndpoint = arn.findAPIEndpoint(button)
 
@@ -84,6 +94,11 @@ export async function enable(arn: AnimeNotifier, button: HTMLButtonElement) {
 
 // Disable (bool field)
 export async function disable(arn: AnimeNotifier, button: HTMLButtonElement) {
+	if(!button.dataset.field) {
+		console.error("Button missing data-field:", button)
+		return
+	}
+
 	let obj = {}
 	let apiEndpoint = arn.findAPIEndpoint(button)
 
@@ -106,18 +121,21 @@ export async function disable(arn: AnimeNotifier, button: HTMLButtonElement) {
 }
 
 // Append new element to array
-export function arrayAppend(arn: AnimeNotifier, element: HTMLElement) {
+export async function arrayAppend(arn: AnimeNotifier, element: HTMLElement) {
 	let field = element.dataset.field
 	let object = element.dataset.object || ""
 	let apiEndpoint = arn.findAPIEndpoint(element)
 
-	arn.post(apiEndpoint + "/field/" + field + "/append", object)
-	.then(() => arn.reloadContent())
-	.catch(err => arn.statusMessage.showError(err))
+	try {
+		await arn.post(apiEndpoint + "/field/" + field + "/append", object)
+		await arn.reloadContent()
+	} catch(err) {
+		arn.statusMessage.showError(err)
+	}
 }
 
 // Remove element from array
-export function arrayRemove(arn: AnimeNotifier, element: HTMLElement) {
+export async function arrayRemove(arn: AnimeNotifier, element: HTMLElement) {
 	if(!confirm("Are you sure you want to remove this element?")) {
 		return
 	}
@@ -126,9 +144,12 @@ export function arrayRemove(arn: AnimeNotifier, element: HTMLElement) {
 	let index = element.dataset.index
 	let apiEndpoint = arn.findAPIEndpoint(element)
 
-	arn.post(apiEndpoint + "/field/" + field + "/remove/" + index)
-	.then(() => arn.reloadContent())
-	.catch(err => arn.statusMessage.showError(err))
+	try {
+		await arn.post(apiEndpoint + "/field/" + field + "/remove/" + index)
+		await arn.reloadContent()
+	} catch(err) {
+		arn.statusMessage.showError(err)
+	}
 }
 
 // Increase episode
@@ -137,10 +158,16 @@ export function increaseEpisode(arn: AnimeNotifier, element: HTMLElement) {
 		return
 	}
 
-	let prev = element.previousSibling as HTMLElement
+	let prev = element.previousSibling
+
+	if(prev === null || !(prev instanceof HTMLElement) || prev.textContent === null) {
+		console.error("Previous sibling is invalid:", element)
+		return
+	}
+
 	let episodes = parseInt(prev.textContent)
 	prev.textContent = String(episodes + 1)
-	save(arn, prev)
+	return save(arn, prev)
 }
 
 // Add number
@@ -149,6 +176,11 @@ export function addNumber(arn: AnimeNotifier, element: HTMLElement) {
 		return
 	}
 
+	if(!element.dataset.id || !element.dataset.add) {
+		console.error("Element is missing the data-id or data-add attribute:", element)
+		return
+	}
+
 	let input = document.getElementById(element.dataset.id) as HTMLInputElement
 	let add = parseInt(element.dataset.add)
 	let num = parseInt(input.value)
@@ -167,5 +199,5 @@ export function addNumber(arn: AnimeNotifier, element: HTMLElement) {
 	}
 
 	input.value = newValue.toString()
-	save(arn, input)
+	return save(arn, input)
 }
\ No newline at end of file
diff --git a/scripts/Actions/Shop.ts b/scripts/Actions/Shop.ts
index 9fa9b4e0..56d46597 100644
--- a/scripts/Actions/Shop.ts
+++ b/scripts/Actions/Shop.ts
@@ -36,8 +36,19 @@ export function chargeUp(arn: AnimeNotifier, button: HTMLElement) {
 // Toggle fade
 export function toggleFade(arn: AnimeNotifier, button: HTMLElement) {
 	let elementId = button.dataset.elementId
+
+	if(!elementId) {
+		console.error("Missing element ID:", elementId)
+		return
+	}
+
 	let element = document.getElementById(elementId)
 
+	if(!element) {
+		console.error("Invalid element ID:", elementId)
+		return
+	}
+
 	if(element.classList.contains("fade-out")) {
 		element.classList.remove("fade-out")
 	} else {
diff --git a/scripts/Actions/SideBar.ts b/scripts/Actions/SideBar.ts
index 6b542441..8b0746a8 100644
--- a/scripts/Actions/SideBar.ts
+++ b/scripts/Actions/SideBar.ts
@@ -2,5 +2,6 @@ import AnimeNotifier from "../AnimeNotifier"
 
 // Toggle sidebar
 export function toggleSidebar(arn: AnimeNotifier) {
-	document.getElementById("sidebar").classList.toggle("sidebar-visible")
+	let sidebar = document.getElementById("sidebar") as HTMLElement
+	sidebar.classList.toggle("sidebar-visible")
 }
\ No newline at end of file
diff --git a/scripts/Actions/Upload.ts b/scripts/Actions/Upload.ts
index b4d40489..36df94b0 100644
--- a/scripts/Actions/Upload.ts
+++ b/scripts/Actions/Upload.ts
@@ -3,26 +3,31 @@ import { bytesHumanReadable, uploadWithProgress } from "../Utils"
 
 // Select file
 export function selectFile(arn: AnimeNotifier, button: HTMLButtonElement) {
-	if(button.dataset.endpoint === "/api/upload/cover" && arn.user.dataset.pro !== "true") {
+	let fileType = button.dataset.type
+	let endpoint = button.dataset.endpoint
+
+	if(endpoint === "/api/upload/cover" && arn.user && arn.user.dataset.pro !== "true") {
 		alert("Please buy a PRO account to use this feature.")
 		return
 	}
 
-	let fileType = button.dataset.type
-	let endpoint = button.dataset.endpoint
-
 	// Click on virtual file input element
 	let input = document.createElement("input")
 	input.setAttribute("type", "file")
-	input.value = null
+	input.value = ""
 
 	input.onchange = async () => {
-		let file = input.files[0]
-
-		if(!file) {
+		if(!fileType || !endpoint) {
+			console.error("Missing data-type or data-endpoint:", button)
 			return
 		}
 
+		if(!input.files || input.files.length === 0) {
+			return
+		}
+
+		let file = input.files[0]
+
 		// Check mime type for images
 		if(fileType === "image" && !file.type.startsWith("image/")) {
 			arn.statusMessage.showError(file.name + " is not an image file!")
@@ -171,7 +176,7 @@ function previewImage(dataURL: string, endpoint: string, previews: HTMLCollectio
 
 // Update sidebar avatar
 function updateSideBarAvatar(url: string) {
-	let sidebar = document.getElementById("sidebar")
+	let sidebar = document.getElementById("sidebar") as HTMLElement
 	let userImage = sidebar.getElementsByClassName("user-image")[0] as HTMLImageElement
 	let lazyLoad = userImage["became visible"]
 
diff --git a/scripts/Actions/User.ts b/scripts/Actions/User.ts
index c1ced1da..86b5bfaa 100644
--- a/scripts/Actions/User.ts
+++ b/scripts/Actions/User.ts
@@ -3,21 +3,28 @@ import Diff from "scripts/Diff"
 
 // Follow user
 export async function followUser(arn: AnimeNotifier, element: HTMLElement) {
-	try {
-		await arn.post(element.dataset.api)
-		await arn.reloadContent()
-		arn.statusMessage.showInfo("You are now following " + document.getElementById("nick").textContent + ".")
-	} catch(err) {
-		arn.statusMessage.showError(err)
-	}
+	return updateFollow(arn, element, "You are now following")
 }
 
 // Unfollow user
 export async function unfollowUser(arn: AnimeNotifier, element: HTMLElement) {
+	return updateFollow(arn, element, "You stopped following")
+}
+
+// Update follow
+async function updateFollow(arn: AnimeNotifier, element: HTMLElement, message: string) {
+	let api = element.dataset.api
+	let nick = document.getElementById("nick")
+
+	if(!api || !nick || !nick.textContent) {
+		console.error("Missing data-api or invalid nick:", element)
+		return
+	}
+
 	try {
-		await arn.post(element.dataset.api)
+		await arn.post(api)
 		await arn.reloadContent()
-		arn.statusMessage.showInfo("You stopped following " + document.getElementById("nick").textContent + ".")
+		arn.statusMessage.showInfo(`${message} ${nick.textContent}.`)
 	} catch(err) {
 		arn.statusMessage.showError(err)
 	}
diff --git a/scripts/Actions/Video.ts b/scripts/Actions/Video.ts
index bf019be8..7204de15 100644
--- a/scripts/Actions/Video.ts
+++ b/scripts/Actions/Video.ts
@@ -2,9 +2,21 @@ import AnimeNotifier from "../AnimeNotifier"
 
 // Toggle play video
 export function togglePlayVideo(arn: AnimeNotifier, element: HTMLElement) {
-	let container = document.getElementById(element.dataset.mediaId)
-	let video = container.getElementsByTagName("video")[0]
+	let mediaId = element.dataset.mediaId
 
+	if(!mediaId) {
+		console.error("Missing data-media-id:", element)
+		return
+	}
+
+	let container = document.getElementById(mediaId)
+
+	if(!container) {
+		console.error("Invalid data-media-id:", element)
+		return
+	}
+
+	let video = container.getElementsByTagName("video")[0]
 	video.volume = arn.audioPlayer.volume
 
 	if(video.readyState >= 2) {
@@ -30,7 +42,19 @@ function togglePlayVideoElement(video: HTMLVideoElement) {
 // Toggle fullscreen
 export function toggleFullscreen(arn: AnimeNotifier, button: HTMLElement) {
 	let elementId = button.dataset.id
+
+	if(!elementId) {
+		console.error("Missing data-id:", button)
+		return
+	}
+
 	let element = document.getElementById(elementId)
+
+	if(!element) {
+		console.error("Invalid data-id:", button)
+		return
+	}
+
 	let requestFullscreen = element.requestFullscreen || element["mozRequestFullScreen"] || element["webkitRequestFullScreen"] || element["msRequestFullscreen"]
 	let exitFullscreen = document.exitFullscreen || document["mozCancelFullScreen"] || document["webkitExitFullscreen"] || document["msExitFullscreen"]
 	let fullscreen = document.fullscreen || document["webkitIsFullScreen"] || document["mozFullScreen"]
diff --git a/scripts/AnimeNotifier.ts b/scripts/AnimeNotifier.ts
index cc2b0c96..cef05e8a 100644
--- a/scripts/AnimeNotifier.ts
+++ b/scripts/AnimeNotifier.ts
@@ -1474,7 +1474,7 @@ export default class AnimeNotifier {
 	}
 
 	// This is called every time an uncaught JavaScript error is thrown
-	onError(evt: ErrorEvent) {
+	async onError(evt: ErrorEvent) {
 		let report = {
 			message: evt.message,
 			stack: evt.error.stack,
@@ -1483,8 +1483,11 @@ export default class AnimeNotifier {
 			columnNumber: evt.colno,
 		}
 
-		this.post("/api/new/clienterrorreport", report)
-		.then(() => console.log("Successfully reported the error to the website staff."))
-		.catch(() => console.warn("Failed reporting the error to the website staff."))
+		try {
+			await this.post("/api/new/clienterrorreport", report)
+			console.log("Successfully reported the error to the website staff.")
+		} catch(err) {
+			console.warn("Failed reporting the error to the website staff:", err)
+		}
 	}
 }
\ No newline at end of file