diff --git a/keyserver/src/fetchers/user-fetchers.js b/keyserver/src/fetchers/user-fetchers.js
index e502d47c7..3d0bf9c78 100644
--- a/keyserver/src/fetchers/user-fetchers.js
+++ b/keyserver/src/fetchers/user-fetchers.js
@@ -1,316 +1,316 @@
 // @flow
 
 import { hasMinCodeVersion } from 'lib/shared/version-utils';
 import {
   undirectedStatus,
   directedStatus,
   userRelationshipStatus,
 } from 'lib/types/relationship-types';
 import {
   communityThreadTypes,
   threadPermissions,
 } from 'lib/types/thread-types';
 import type {
   UserInfos,
   CurrentUserInfo,
   OldCurrentUserInfo,
   LoggedInUserInfo,
   OldLoggedInUserInfo,
   GlobalUserInfo,
 } from 'lib/types/user-types';
 import { ServerError } from 'lib/utils/errors';
 
 import { dbQuery, SQL } from '../database/database';
 import type { Viewer } from '../session/viewer';
 
 async function fetchUserInfos(
   userIDs: string[],
 ): Promise<{ [id: string]: GlobalUserInfo }> {
   if (userIDs.length <= 0) {
     return {};
   }
 
   const query = SQL`
     SELECT id, username FROM users WHERE id IN (${userIDs})
   `;
   const [result] = await dbQuery(query);
 
   const userInfos = {};
   for (const row of result) {
     const id = row.id.toString();
     userInfos[id] = {
       id,
       username: row.username,
     };
   }
   for (const userID of userIDs) {
     if (!userInfos[userID]) {
       userInfos[userID] = {
         id: userID,
         username: null,
       };
     }
   }
 
   return userInfos;
 }
 
 async function fetchKnownUserInfos(
   viewer: Viewer,
   userIDs?: $ReadOnlyArray<string>,
 ): Promise<UserInfos> {
   if (!viewer.loggedIn) {
     return {};
   }
   if (userIDs && userIDs.length === 0) {
     return {};
   }
 
   const query = SQL`
     SELECT ru.user1, ru.user2, u.username, ru.status AS undirected_status,
       rd1.status AS user1_directed_status, rd2.status AS user2_directed_status
     FROM relationships_undirected ru
     LEFT JOIN relationships_directed rd1
       ON rd1.user1 = ru.user1 AND rd1.user2 = ru.user2
     LEFT JOIN relationships_directed rd2
       ON rd2.user1 = ru.user2 AND rd2.user2 = ru.user1
     LEFT JOIN users u
       ON u.id != ${viewer.userID} AND (u.id = ru.user1 OR u.id = ru.user2)
   `;
   if (userIDs) {
     query.append(SQL`
       WHERE (ru.user1 = ${viewer.userID} AND ru.user2 IN (${userIDs})) OR
         (ru.user1 IN (${userIDs}) AND ru.user2 = ${viewer.userID})
     `);
   } else {
     query.append(SQL`
       WHERE ru.user1 = ${viewer.userID} OR ru.user2 = ${viewer.userID}
     `);
   }
   query.append(SQL`
     UNION SELECT id AS user1, NULL AS user2, username,
       CAST(NULL AS UNSIGNED) AS undirected_status,
       CAST(NULL AS UNSIGNED) AS user1_directed_status,
       CAST(NULL AS UNSIGNED) AS user2_directed_status
     FROM users
     WHERE id = ${viewer.userID}
   `);
   const [result] = await dbQuery(query);
 
   const userInfos = {};
   for (const row of result) {
     const user1 = row.user1.toString();
     const user2 = row.user2 ? row.user2.toString() : null;
     const id = user1 === viewer.userID && user2 ? user2 : user1;
     const userInfo = {
       id,
       username: row.username,
     };
 
     if (!user2) {
       userInfos[id] = userInfo;
       continue;
     }
 
     let viewerDirectedStatus;
     let targetDirectedStatus;
     if (user1 === viewer.userID) {
       viewerDirectedStatus = row.user1_directed_status;
       targetDirectedStatus = row.user2_directed_status;
     } else {
       viewerDirectedStatus = row.user2_directed_status;
       targetDirectedStatus = row.user1_directed_status;
     }
 
     const viewerBlockedTarget = viewerDirectedStatus === directedStatus.BLOCKED;
     const targetBlockedViewer = targetDirectedStatus === directedStatus.BLOCKED;
     const friendshipExists = row.undirected_status === undirectedStatus.FRIEND;
     const viewerRequestedTargetFriendship =
       viewerDirectedStatus === directedStatus.PENDING_FRIEND;
     const targetRequestedViewerFriendship =
       targetDirectedStatus === directedStatus.PENDING_FRIEND;
 
     let relationshipStatus;
     if (viewerBlockedTarget && targetBlockedViewer) {
       relationshipStatus = userRelationshipStatus.BOTH_BLOCKED;
     } else if (targetBlockedViewer) {
       relationshipStatus = userRelationshipStatus.BLOCKED_VIEWER;
     } else if (viewerBlockedTarget) {
       relationshipStatus = userRelationshipStatus.BLOCKED_BY_VIEWER;
     } else if (friendshipExists) {
       relationshipStatus = userRelationshipStatus.FRIEND;
     } else if (targetRequestedViewerFriendship) {
       relationshipStatus = userRelationshipStatus.REQUEST_RECEIVED;
     } else if (viewerRequestedTargetFriendship) {
       relationshipStatus = userRelationshipStatus.REQUEST_SENT;
     }
 
     userInfos[id] = userInfo;
     if (relationshipStatus) {
       userInfos[id].relationshipStatus = relationshipStatus;
     }
 
     if (relationshipStatus && !row.username) {
       console.warn(
         `user ${viewer.userID} has ${relationshipStatus} relationship with ` +
           `anonymous user ${id}`,
       );
     }
   }
 
   return userInfos;
 }
 
 async function verifyUserIDs(
   userIDs: $ReadOnlyArray<string>,
 ): Promise<string[]> {
   if (userIDs.length === 0) {
     return [];
   }
   const query = SQL`SELECT id FROM users WHERE id IN (${userIDs})`;
   const [result] = await dbQuery(query);
   return result.map(row => row.id.toString());
 }
 
 async function verifyUserOrCookieIDs(
   ids: $ReadOnlyArray<string>,
 ): Promise<string[]> {
   if (ids.length === 0) {
     return [];
   }
   const query = SQL`
     SELECT id FROM users WHERE id IN (${ids})
     UNION SELECT id FROM cookies WHERE id IN (${ids})
   `;
   const [result] = await dbQuery(query);
   return result.map(row => row.id.toString());
 }
 
 async function fetchCurrentUserInfo(
   viewer: Viewer,
 ): Promise<OldCurrentUserInfo | CurrentUserInfo> {
   if (!viewer.loggedIn) {
     return ({ id: viewer.cookieID, anonymous: true }: CurrentUserInfo);
   }
   const currentUserInfo = await fetchLoggedInUserInfo(viewer);
   return currentUserInfo;
 }
 
 async function fetchLoggedInUserInfo(
   viewer: Viewer,
 ): Promise<OldLoggedInUserInfo | LoggedInUserInfo> {
   const userQuery = SQL`
     SELECT id, username
     FROM users
     WHERE id = ${viewer.userID}
   `;
 
   const settingsQuery = SQL`
     SELECT name, data
     FROM settings
     WHERE user = ${viewer.userID}
   `;
 
   const [[userResult], [settingsResult]] = await Promise.all([
     dbQuery(userQuery),
     dbQuery(settingsQuery),
   ]);
 
   const [userRow] = userResult;
 
   const stillExpectsEmailFields = !hasMinCodeVersion(
     viewer.platformDetails,
     87,
   );
 
   if (!userRow) {
     throw new ServerError('unknown_error');
   }
 
   const id = userRow.id.toString();
   const { username } = userRow;
 
   if (stillExpectsEmailFields) {
     return {
       id,
       username,
       email: 'removed from DB',
       emailVerified: true,
     };
   }
 
   const featureGateSettings = !hasMinCodeVersion(viewer.platformDetails, 1000);
 
   if (featureGateSettings) {
     return { id, username };
   }
 
   const settings = settingsResult.reduce((prev, curr) => {
     prev[curr.name] = curr.data;
     return prev;
   }, {});
 
   return { id, username, settings };
 }
 
 async function fetchAllUserIDs(): Promise<string[]> {
   const query = SQL`SELECT id FROM users`;
   const [result] = await dbQuery(query);
   return result.map(row => row.id.toString());
 }
 
 async function fetchUsername(id: string): Promise<?string> {
   const query = SQL`SELECT username FROM users WHERE id = ${id}`;
   const [result] = await dbQuery(query);
   if (result.length === 0) {
     return null;
   }
   const row = result[0];
   return row.username;
 }
 
 async function fetchKeyserverAdminID(): Promise<?string> {
   const changeRoleExtractString = `$.${threadPermissions.CHANGE_ROLE}`;
   const query = SQL`
     SELECT m.user FROM memberships m
     INNER JOIN roles r ON m.role = r.id
     INNER JOIN threads t ON r.thread = t.id
     WHERE r.name = "Admins" AND 
       t.type IN (${communityThreadTypes}) AND 
       JSON_EXTRACT(r.permissions, ${changeRoleExtractString}) IS TRUE
   `;
   const [result] = await dbQuery(query);
   if (result.length === 0) {
     return null;
   }
   if (result.length > 1) {
     console.warn('more than one community admin found');
   }
 
   return result[0].user;
 }
 
 async function fetchUserIDForEthereumAddress(
   address: string,
 ): Promise<?string> {
   const query = SQL`
     SELECT id
     FROM users
     WHERE LCASE(ethereum_address) = LCASE(${address})
   `;
   const [result] = await dbQuery(query);
-  return result.length === 0 ? null : result[0].id;
+  return result.length === 0 ? null : result[0].id.toString();
 }
 
 export {
   fetchUserInfos,
   fetchLoggedInUserInfo,
   verifyUserIDs,
   verifyUserOrCookieIDs,
   fetchCurrentUserInfo,
   fetchAllUserIDs,
   fetchUsername,
   fetchKnownUserInfos,
   fetchKeyserverAdminID,
   fetchUserIDForEthereumAddress,
 };