diff --git a/frontend/src/app.d.ts b/frontend/src/app.d.ts
index 9176095..d4759fd 100644
--- a/frontend/src/app.d.ts
+++ b/frontend/src/app.d.ts
@@ -1,8 +1,15 @@
 // See https://kit.svelte.dev/docs/types#app
+
+import type { ErrorCode } from "$lib/api/entities";
+
 // for information about these interfaces
 declare global {
   namespace App {
-    // interface Error {}
+    interface Error {
+      code: ErrorCode;
+      message?: string | undefined;
+      details?: string | undefined;
+    }
     // interface Locals {}
     // interface PageData {}
     // interface Platform {}
diff --git a/frontend/src/routes/+error.svelte b/frontend/src/routes/+error.svelte
index 21dc4d0..9d7d887 100644
--- a/frontend/src/routes/+error.svelte
+++ b/frontend/src/routes/+error.svelte
@@ -1,17 +1,20 @@
 <script lang="ts">
   import { page } from "$app/stores";
+    import { ErrorCode } from "$lib/api/entities";
 </script>
 
 <h1>An error occurred ({$page.status})</h1>
 
-{#if $page.status === 404}
+{#if $page.error?.code === ErrorCode.NotFound}
   <p>
     The page you were looking for was not found. If you're sure the page exists, check for any typos
     in the address.
   </p>
-{:else if $page.status === 429}
+{:else if $page.error?.code === ErrorCode.Forbidden || $page.error?.code === ErrorCode.InvalidToken}
+  <p>You're not logged in, or you aren't allowed to access this page.</p>
+{:else if $page.error?.code === 429}
   <p>You've exceeded a rate limit, please try again later.</p>
-{:else if $page.status === 500}
+{:else if $page.error?.code === 500}
   <p>An internal error occurred. Please try again later.</p>
   <p>
     If this error keeps happening, please <a
@@ -22,4 +25,4 @@
   </p>
 {/if}
 
-<p>Error message: <code>{$page.error?.message}</code></p>
+<p>Error code: <code>{$page.error?.code}</code></p>
diff --git a/frontend/src/routes/@[username]/+error.svelte b/frontend/src/routes/@[username]/+error.svelte
index 8e0cbbc..4f0292f 100644
--- a/frontend/src/routes/@[username]/+error.svelte
+++ b/frontend/src/routes/@[username]/+error.svelte
@@ -1,22 +1,32 @@
 <script lang="ts">
   import { page } from "$app/stores";
+  import { ErrorCode } from "$lib/api/entities";
 </script>
 
-<h1>An error occurred ({$page.status})</h1>
-
-{#if $page.status === 404}
-  <p>The user you were looking for couldn't be found. Please check for any typos.</p>
-{:else if $page.status === 429}
-  <p>You've exceeded a rate limit, please try again later.</p>
-{:else if $page.status === 500}
-  <p>An internal error occurred. Please try again later.</p>
+{#if $page.error?.code === ErrorCode.Forbidden || $page.error?.code === ErrorCode.InvalidToken}
+  <h1>Not logged in</h1>
   <p>
-    If this error keeps happening, please <a
-      href="https://codeberg.org/pronounscc/pronouns.cc/issues"
-      target="_blank"
-      rel="noreferrer">file a bug report</a
-    > with an explanation of what you did to cause the error.
+    Either you aren't logged in, or your login has expired. Please <a href="/auth/login"
+      >log in again</a
+    >.
   </p>
-{/if}
+{:else}
+  <h1>An error occurred ({$page.status})</h1>
 
-<p>Error message: <code>{$page.error?.message}</code></p>
+  {#if $page.status === 404}
+    <p>The user you were looking for couldn't be found. Please check for any typos.</p>
+  {:else if $page.status === 429}
+    <p>You've exceeded a rate limit, please try again later.</p>
+  {:else if $page.status === 500}
+    <p>An internal error occurred. Please try again later.</p>
+    <p>
+      If this error keeps happening, please <a
+        href="https://codeberg.org/pronounscc/pronouns.cc/issues"
+        target="_blank"
+        rel="noreferrer">file a bug report</a
+      > with an explanation of what you did to cause the error.
+    </p>
+  {/if}
+
+  <p>Error message: <code>{$page.error?.message}</code></p>
+{/if}
diff --git a/frontend/src/routes/@[username]/+page.server.ts b/frontend/src/routes/@[username]/+page.server.ts
index 9a4c26f..447c5e3 100644
--- a/frontend/src/routes/@[username]/+page.server.ts
+++ b/frontend/src/routes/@[username]/+page.server.ts
@@ -11,7 +11,7 @@ export const load = async ({ params }) => {
     return resp;
   } catch (e) {
     if ((e as APIError).code === ErrorCode.UserNotFound) {
-      throw error(404, (e as APIError).message);
+      throw error(404, e as APIError);
     }
 
     throw e;
diff --git a/frontend/src/routes/@[username]/+page.svelte b/frontend/src/routes/@[username]/+page.svelte
index ca29cbc..76da6de 100644
--- a/frontend/src/routes/@[username]/+page.svelte
+++ b/frontend/src/routes/@[username]/+page.svelte
@@ -196,7 +196,7 @@
           <hr />
           <p>
             <em>
-              Your profile is empty! You can customize it by going to the <a href="/edit/profile"
+              Your profile is empty! You can customize it by going to the <a href="/@{data.name}/edit"
                 >edit profile</a
               > page.</em
             > <span class="text-muted">(only you can see this)</span>
diff --git a/frontend/src/routes/@[username]/[memberName]/+page.server.ts b/frontend/src/routes/@[username]/[memberName]/+page.server.ts
index ab41c47..9b14e70 100644
--- a/frontend/src/routes/@[username]/[memberName]/+page.server.ts
+++ b/frontend/src/routes/@[username]/[memberName]/+page.server.ts
@@ -14,9 +14,9 @@ export const load = async ({ params }) => {
       (e as APIError).code === ErrorCode.UserNotFound ||
       (e as APIError).code === ErrorCode.MemberNotFound
     ) {
-      throw error(404, (e as APIError).message);
+      throw error(404, e as APIError);
     }
 
-    throw error(500, (e as APIError).message);
+    throw error(500, e as APIError);
   }
 };
diff --git a/frontend/src/routes/@[username]/edit/+layout.ts b/frontend/src/routes/@[username]/edit/+layout.ts
index 894eb83..2fd9c4c 100644
--- a/frontend/src/routes/@[username]/edit/+layout.ts
+++ b/frontend/src/routes/@[username]/edit/+layout.ts
@@ -1,23 +1,28 @@
 import type { PrideFlag, APIError, MeUser, PronounsJson } from "$lib/api/entities";
 import { apiFetchClient } from "$lib/api/fetch";
-import { error } from "@sveltejs/kit";
+import { error, redirect, type Redirect } from "@sveltejs/kit";
 
 import pronounsRaw from "$lib/pronouns.json";
 const pronouns = pronounsRaw as PronounsJson;
 
 export const ssr = false;
 
-export const load = async () => {
+export const load = async ({ params }) => {
   try {
     const user = await apiFetchClient<MeUser>(`/users/@me`);
     const flags = await apiFetchClient<PrideFlag[]>("/users/@me/flags");
 
+    if (params.username !== user.name) {
+      throw redirect(303, `/@${user.name}/edit`);
+    }
+
     return {
       user,
       pronouns: pronouns.autocomplete,
       flags,
     };
   } catch (e) {
-    throw error((e as APIError).code, (e as APIError).message);
+    if ("code" in e) throw error(500, e as APIError);
+    throw e;
   }
 };
diff --git a/frontend/src/routes/[username]/+page.server.ts b/frontend/src/routes/[username]/+page.server.ts
index 3794610..39331d6 100644
--- a/frontend/src/routes/[username]/+page.server.ts
+++ b/frontend/src/routes/[username]/+page.server.ts
@@ -11,7 +11,7 @@ export const load = async ({ params }) => {
     throw redirect(303, `/@${resp.name}`);
   } catch (e) {
     if ((e as APIError).code === ErrorCode.UserNotFound) {
-      throw error(404, (e as APIError).message);
+      throw error(404, e as APIError);
     }
 
     throw e;
diff --git a/frontend/src/routes/edit/member/[id]/+page.svelte b/frontend/src/routes/edit/member/[id]/+page.svelte
index 3547165..3799a7d 100644
--- a/frontend/src/routes/edit/member/[id]/+page.svelte
+++ b/frontend/src/routes/edit/member/[id]/+page.svelte
@@ -768,7 +768,7 @@
             <Icon name="exclamation-triangle-fill" aria-hidden />
             Your member list is currently hidden, so <strong>this setting has no effect</strong>. If
             you want to make your member list visible again,
-            <a href="/edit/profile">edit your user profile</a>.
+            <a href="/@{data.user.name}/other">edit your user profile</a>.
             <br />
           {/if}
           <Icon name="info-circle-fill" aria-hidden />
diff --git a/frontend/src/routes/edit/member/[id]/+page.ts b/frontend/src/routes/edit/member/[id]/+page.ts
index a84b94d..eeb532d 100644
--- a/frontend/src/routes/edit/member/[id]/+page.ts
+++ b/frontend/src/routes/edit/member/[id]/+page.ts
@@ -20,6 +20,6 @@ export const load = async ({ params }) => {
       flags,
     };
   } catch (e) {
-    throw error((e as APIError).code, (e as APIError).message);
+    throw error((e as APIError).code, e as APIError);
   }
 };
diff --git a/frontend/src/routes/edit/profile/+page.ts b/frontend/src/routes/edit/profile/+page.ts
index 1e8be0c..d1b7381 100644
--- a/frontend/src/routes/edit/profile/+page.ts
+++ b/frontend/src/routes/edit/profile/+page.ts
@@ -1,11 +1,17 @@
-import type { MeUser } from "$lib/api/entities";
+import { ErrorCode, type APIError, type MeUser } from "$lib/api/entities";
 import { apiFetchClient } from "$lib/api/fetch";
-import { redirect } from "@sveltejs/kit";
+import { error, redirect } from "@sveltejs/kit";
 
 export const ssr = false;
 
 export const load = async () => {
-  const resp = await apiFetchClient<MeUser>(`/users/@me`);
+  try {
+    const resp = await apiFetchClient<MeUser>(`/users/@me`);
 
-  throw redirect(303, `/@${resp.name}/edit`);
+    throw redirect(303, `/@${resp.name}/edit`);
+  } catch (e) {
+    if ((e as APIError).code === ErrorCode.Forbidden || (e as APIError).code === ErrorCode.InvalidToken) {
+      throw error(403, e as APIError)
+    }
+  }
 };
diff --git a/frontend/src/routes/pronouns/[...pronouns]/+page.ts b/frontend/src/routes/pronouns/[...pronouns]/+page.ts
index 6ab0564..3442f37 100644
--- a/frontend/src/routes/pronouns/[...pronouns]/+page.ts
+++ b/frontend/src/routes/pronouns/[...pronouns]/+page.ts
@@ -1,6 +1,6 @@
 import { error } from "@sveltejs/kit";
 import type { PageLoad } from "./$types";
-import type { PronounsJson } from "$lib/api/entities";
+import { ErrorCode, type PronounsJson } from "$lib/api/entities";
 
 import pronounsRaw from "$lib/pronouns.json";
 const pronouns = pronounsRaw as PronounsJson;
@@ -10,7 +10,7 @@ export const load = (async ({ params }) => {
 
   const arr = param.split("/");
   if (arr.length === 0 || params.pronouns === "") {
-    throw error(404, "Pronouns not found");
+    throw error(404, { code: ErrorCode.NotFound, message: "Pronouns not found" });
   }
 
   if (arr.length === 5) {
@@ -46,5 +46,5 @@ export const load = (async ({ params }) => {
     };
   }
 
-  throw error(404, "Pronouns not found");
+  throw error(404, { code: ErrorCode.NotFound, message: "Pronouns not found" });
 }) satisfies PageLoad;
diff --git a/frontend/src/routes/reports/+page.ts b/frontend/src/routes/reports/+page.ts
index 9b519ca..ee1743e 100644
--- a/frontend/src/routes/reports/+page.ts
+++ b/frontend/src/routes/reports/+page.ts
@@ -10,37 +10,30 @@ export const load = async ({ url }) => {
   const reporterId = searchParams.get("reporter_id");
   const isClosed = searchParams.get("closed") === "true";
 
-  try {
-    let reports: Report[];
-    if (userId) {
-      const params = new URLSearchParams();
-      if (before) params.append("before", before.toString());
+  let reports: Report[];
+  if (userId) {
+    const params = new URLSearchParams();
+    if (before) params.append("before", before.toString());
 
-      reports = await apiFetchClient<Report[]>(
-        `/admin/reports/by-user/${userId}?${params.toString()}`,
-      );
-    } else if (reporterId) {
-      const params = new URLSearchParams();
-      if (before) params.append("before", before.toString());
+    reports = await apiFetchClient<Report[]>(
+      `/admin/reports/by-user/${userId}?${params.toString()}`,
+    );
+  } else if (reporterId) {
+    const params = new URLSearchParams();
+    if (before) params.append("before", before.toString());
 
-      reports = await apiFetchClient<Report[]>(
-        `/admin/reports/by-reporter/${reporterId}?${params.toString()}`,
-      );
-    } else {
-      const params = new URLSearchParams();
-      if (before) params.append("before", before.toString());
-      if (isClosed) params.append("closed", "true");
+    reports = await apiFetchClient<Report[]>(
+      `/admin/reports/by-reporter/${reporterId}?${params.toString()}`,
+    );
+  } else {
+    const params = new URLSearchParams();
+    if (before) params.append("before", before.toString());
+    if (isClosed) params.append("closed", "true");
 
-      reports = await apiFetchClient<Report[]>(`/admin/reports?${params.toString()}`);
-    }
-
-    return { before, isClosed, userId, reporterId, reports } as PageLoadData;
-  } catch (e) {
-    if ((e as APIError).code === ErrorCode.Forbidden) {
-      throw error(400, "You're not an admin");
-    }
-    throw e;
+    reports = await apiFetchClient<Report[]>(`/admin/reports?${params.toString()}`);
   }
+
+  return { before, isClosed, userId, reporterId, reports } as PageLoadData;
 };
 
 interface PageLoadData {
diff --git a/frontend/src/routes/settings/+page.svelte b/frontend/src/routes/settings/+page.svelte
index c28872e..ee1f0a3 100644
--- a/frontend/src/routes/settings/+page.svelte
+++ b/frontend/src/routes/settings/+page.svelte
@@ -158,7 +158,7 @@
       <p class="text-center">
         <FallbackImage width={200} urls={userAvatars(data.user)} alt="Your avatar" />
         <br />
-        To change your avatar, go to <a href="/edit/profile">edit profile</a>.
+        To change your avatar, go to <a href="/@{data.user.name}/edit">edit profile</a>.
       </p>
     </div>
   </div>
diff --git a/frontend/src/routes/settings/export/+page.ts b/frontend/src/routes/settings/export/+page.ts
index 4596125..972bc2f 100644
--- a/frontend/src/routes/settings/export/+page.ts
+++ b/frontend/src/routes/settings/export/+page.ts
@@ -10,6 +10,6 @@ export const load = async () => {
   } catch (e) {
     if ((e as APIError).code === ErrorCode.NotFound) return { exportData: null };
 
-    throw error((e as APIError).code, (e as APIError).message);
+    throw error(500, e as APIError);
   }
 };