diff --git a/client/src/app/+admin/users/user-edit/user-edit.ts b/client/src/app/+admin/users/user-edit/user-edit.ts
index bdbb10814..787f4b689 100644
--- a/client/src/app/+admin/users/user-edit/user-edit.ts
+++ b/client/src/app/+admin/users/user-edit/user-edit.ts
@@ -6,6 +6,7 @@ import { USER_ROLE_LABELS } from '@shared/core-utils/users'
 import { ServerConfig, UserAdminFlag, UserRole, VideoResolution } from '@shared/models'
 
 @Directive()
+// tslint:disable-next-line: directive-class-suffix
 export abstract class UserEdit extends FormReactive implements OnInit {
   videoQuotaOptions: { value: string, label: string, disabled?: boolean }[] = []
   videoQuotaDailyOptions: { value: string, label: string, disabled?: boolean }[] = []
diff --git a/client/src/app/+my-account/my-account-video-playlists/my-account-video-playlists.component.ts b/client/src/app/+my-account/my-account-video-playlists/my-account-video-playlists.component.ts
index 668a23d8f..ba95b6c8b 100644
--- a/client/src/app/+my-account/my-account-video-playlists/my-account-video-playlists.component.ts
+++ b/client/src/app/+my-account/my-account-video-playlists/my-account-video-playlists.component.ts
@@ -1,5 +1,5 @@
 import { Subject } from 'rxjs'
-import { debounceTime, flatMap } from 'rxjs/operators'
+import { debounceTime, mergeMap } from 'rxjs/operators'
 import { Component, OnInit } from '@angular/core'
 import { AuthService, ComponentPagination, ConfirmService, Notifier, User } from '@app/core'
 import { VideoPlaylist, VideoPlaylistService } from '@app/shared/shared-video-playlist'
@@ -95,7 +95,7 @@ export class MyAccountVideoPlaylistsComponent implements OnInit {
 
   private loadVideoPlaylists (reset = false) {
     this.authService.userInformationLoaded
-        .pipe(flatMap(() => {
+        .pipe(mergeMap(() => {
           return this.videoPlaylistService.listAccountPlaylists(this.user.account, this.pagination, '-updatedAt', this.videoPlaylistsSearch)
         }))
         .subscribe(res => {
diff --git a/client/src/app/+videos/+video-edit/video-add-components/video-import-torrent.component.ts b/client/src/app/+videos/+video-edit/video-add-components/video-import-torrent.component.ts
index 538a187a8..3a8e6eecc 100644
--- a/client/src/app/+videos/+video-edit/video-add-components/video-import-torrent.component.ts
+++ b/client/src/app/+videos/+video-edit/video-add-components/video-import-torrent.component.ts
@@ -84,11 +84,11 @@ export class VideoImportTorrentComponent extends VideoSend implements OnInit, Ca
       channelId: this.firstStepChannelId
     }
 
-    this.loadingBar.start()
+    this.loadingBar.useRef().start()
 
     this.videoImportService.importVideoTorrent(torrentfile || this.magnetUri, videoUpdate).subscribe(
       res => {
-        this.loadingBar.complete()
+        this.loadingBar.useRef().complete()
         this.firstStepDone.emit(res.video.name)
         this.isImportingVideo = false
         this.hasImportedVideo = true
@@ -105,7 +105,7 @@ export class VideoImportTorrentComponent extends VideoSend implements OnInit, Ca
       },
 
       err => {
-        this.loadingBar.complete()
+        this.loadingBar.useRef().complete()
         this.isImportingVideo = false
         this.firstStepError.emit()
         this.notifier.error(err.message)
diff --git a/client/src/app/+videos/+video-edit/video-add-components/video-import-url.component.ts b/client/src/app/+videos/+video-edit/video-add-components/video-import-url.component.ts
index 6508eef7e..da25663d7 100644
--- a/client/src/app/+videos/+video-edit/video-add-components/video-import-url.component.ts
+++ b/client/src/app/+videos/+video-edit/video-add-components/video-import-url.component.ts
@@ -71,7 +71,7 @@ export class VideoImportUrlComponent extends VideoSend implements OnInit, CanCom
       channelId: this.firstStepChannelId
     }
 
-    this.loadingBar.start()
+    this.loadingBar.useRef().start()
 
     this.videoImportService
         .importVideoUrl(this.targetUrl, videoUpdate)
@@ -86,7 +86,7 @@ export class VideoImportUrlComponent extends VideoSend implements OnInit, CanCom
         )
         .subscribe(
           ({ video, videoCaptions }) => {
-            this.loadingBar.complete()
+            this.loadingBar.useRef().complete()
             this.firstStepDone.emit(video.name)
             this.isImportingVideo = false
             this.hasImportedVideo = true
@@ -115,7 +115,7 @@ export class VideoImportUrlComponent extends VideoSend implements OnInit, CanCom
           },
 
           err => {
-            this.loadingBar.complete()
+            this.loadingBar.useRef().complete()
             this.isImportingVideo = false
             this.firstStepError.emit()
             this.notifier.error(err.message)
diff --git a/client/src/app/+videos/+video-edit/video-add-components/video-send.ts b/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
index 5d11ba7ce..2e658dfae 100644
--- a/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
+++ b/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
@@ -1,5 +1,5 @@
 import { catchError, switchMap, tap } from 'rxjs/operators'
-import { EventEmitter, OnInit, Directive } from '@angular/core'
+import { Directive, EventEmitter, OnInit } from '@angular/core'
 import { AuthService, CanComponentDeactivateResult, Notifier, ServerService } from '@app/core'
 import { populateAsyncUserVideoChannels } from '@app/helpers'
 import { FormReactive } from '@app/shared/shared-forms'
@@ -8,6 +8,7 @@ import { LoadingBarService } from '@ngx-loading-bar/core'
 import { ServerConfig, VideoConstant, VideoPrivacy } from '@shared/models'
 
 @Directive()
+// tslint:disable-next-line: directive-class-suffix
 export abstract class VideoSend extends FormReactive implements OnInit {
   userVideoChannels: { id: number, label: string, support: string }[] = []
   videoPrivacies: VideoConstant<VideoPrivacy>[] = []
@@ -56,15 +57,15 @@ export abstract class VideoSend extends FormReactive implements OnInit {
   }
 
   protected updateVideoAndCaptions (video: VideoEdit) {
-    this.loadingBar.start()
+    this.loadingBar.useRef().start()
 
     return this.videoService.updateVideo(video)
         .pipe(
           // Then update captions
           switchMap(() => this.videoCaptionService.updateCaptions(video.id, this.videoCaptions)),
-          tap(() => this.loadingBar.complete()),
+          tap(() => this.loadingBar.useRef().complete()),
           catchError(err => {
-            this.loadingBar.complete()
+            this.loadingBar.useRef().complete()
             throw err
           })
         )
diff --git a/client/src/app/+videos/+video-edit/video-update.component.ts b/client/src/app/+videos/+video-edit/video-update.component.ts
index 7bd6eb553..581199d65 100644
--- a/client/src/app/+videos/+video-edit/video-update.component.ts
+++ b/client/src/app/+videos/+video-edit/video-update.component.ts
@@ -101,7 +101,7 @@ export class VideoUpdateComponent extends FormReactive implements OnInit {
 
     this.video.patch(this.form.value)
 
-    this.loadingBar.start()
+    this.loadingBar.useRef().start()
     this.isUpdatingVideo = true
 
     // Update the video
@@ -114,13 +114,13 @@ export class VideoUpdateComponent extends FormReactive implements OnInit {
           () => {
             this.updateDone = true
             this.isUpdatingVideo = false
-            this.loadingBar.complete()
+            this.loadingBar.useRef().complete()
             this.notifier.success(this.i18n('Video updated.'))
             this.router.navigate([ '/videos/watch', this.video.uuid ])
           },
 
           err => {
-            this.loadingBar.complete()
+            this.loadingBar.useRef().complete()
             this.isUpdatingVideo = false
             this.notifier.error(err.message)
             console.error(err)
diff --git a/client/src/app/core/auth/auth-user.model.ts b/client/src/app/core/auth/auth-user.model.ts
index 5efc6e1ab..5679d28a9 100644
--- a/client/src/app/core/auth/auth-user.model.ts
+++ b/client/src/app/core/auth/auth-user.model.ts
@@ -1,7 +1,7 @@
 import { Observable, of } from 'rxjs'
 import { map } from 'rxjs/operators'
 import { User } from '@app/core/users/user.model'
-import { peertubeLocalStorage } from '@app/helpers/peertube-web-storage'
+import { peertubeLocalStorage } from '@root-helpers/peertube-web-storage'
 import { hasUserRight } from '@shared/core-utils/users'
 import {
   MyUser as ServerMyUserModel,
@@ -12,7 +12,7 @@ import {
   UserRole,
   UserVideoQuota
 } from '@shared/models'
-import { TokenOptions, Tokens } from '../../../root-helpers/pure-auth-user.model'
+import { TokenOptions, Tokens } from '@root-helpers/pure-auth-user.model'
 
 export class AuthUser extends User implements ServerMyUserModel {
   tokens: Tokens
diff --git a/client/src/app/shared/shared-moderation/account-blocklist.component.ts b/client/src/app/shared/shared-moderation/account-blocklist.component.ts
index 11e554978..a5a3c27cd 100644
--- a/client/src/app/shared/shared-moderation/account-blocklist.component.ts
+++ b/client/src/app/shared/shared-moderation/account-blocklist.component.ts
@@ -7,6 +7,7 @@ import { AccountBlock } from './account-block.model'
 import { BlocklistComponentType, BlocklistService } from './blocklist.service'
 
 @Directive()
+// tslint:disable-next-line: directive-class-suffix
 export class GenericAccountBlocklistComponent extends RestTable implements OnInit {
   // @ts-ignore: "Abstract methods can only appear within an abstract class"
   abstract mode: BlocklistComponentType
diff --git a/client/src/app/shared/shared-moderation/server-blocklist.component.ts b/client/src/app/shared/shared-moderation/server-blocklist.component.ts
index 694b03762..8f65cdb71 100644
--- a/client/src/app/shared/shared-moderation/server-blocklist.component.ts
+++ b/client/src/app/shared/shared-moderation/server-blocklist.component.ts
@@ -1,12 +1,13 @@
 import { SortMeta } from 'primeng/api'
-import { OnInit, ViewChild, Directive } from '@angular/core'
-import { BatchDomainsModalComponent } from '@app/shared/shared-moderation/batch-domains-modal.component'
+import { Directive, OnInit, ViewChild } from '@angular/core'
 import { Notifier, RestPagination, RestTable } from '@app/core'
+import { BatchDomainsModalComponent } from '@app/shared/shared-moderation/batch-domains-modal.component'
 import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerBlock } from '@shared/models'
 import { BlocklistComponentType, BlocklistService } from './blocklist.service'
 
 @Directive()
+// tslint:disable-next-line: directive-class-suffix
 export class GenericServerBlocklistComponent extends RestTable implements OnInit {
   @ViewChild('batchDomainsModal') batchDomainsModal: BatchDomainsModalComponent
 
diff --git a/client/src/app/shared/shared-video-miniature/abstract-video-list.ts b/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
index 405af5fa6..e18002b74 100644
--- a/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
+++ b/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
@@ -1,6 +1,6 @@
 import { fromEvent, Observable, Subject, Subscription } from 'rxjs'
 import { debounceTime, switchMap, tap } from 'rxjs/operators'
-import { OnDestroy, OnInit, Directive } from '@angular/core'
+import { Directive, OnDestroy, OnInit } from '@angular/core'
 import { ActivatedRoute, Router } from '@angular/router'
 import {
   AuthService,
@@ -31,6 +31,7 @@ enum GroupDate {
 }
 
 @Directive()
+// tslint:disable-next-line: directive-class-suffix
 export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableForReuseHook {
   pagination: ComponentPaginationLight = {
     currentPage: 1,
diff --git a/server/middlewares/validators/plugins.ts b/server/middlewares/validators/plugins.ts
index 2cb49ec43..cba261dc0 100644
--- a/server/middlewares/validators/plugins.ts
+++ b/server/middlewares/validators/plugins.ts
@@ -4,7 +4,7 @@ import { logger } from '../../helpers/logger'
 import { areValidationErrors } from './utils'
 import { isNpmPluginNameValid, isPluginNameValid, isPluginTypeValid, isPluginVersionValid } from '../../helpers/custom-validators/plugins'
 import { PluginManager } from '../../lib/plugins/plugin-manager'
-import { isBooleanValid, isSafePath, toBooleanOrNull, exists } from '../../helpers/custom-validators/misc'
+import { isBooleanValid, isSafePath, toBooleanOrNull, exists, toIntOrNull } from '../../helpers/custom-validators/misc'
 import { PluginModel } from '../../models/server/plugin'
 import { InstallOrUpdatePlugin } from '../../../shared/models/plugins/install-plugin.model'
 import { PluginType } from '../../../shared/models/plugins/plugin.type'
@@ -75,6 +75,7 @@ const pluginStaticDirectoryValidator = [
 const listPluginsValidator = [
   query('pluginType')
     .optional()
+    .customSanitizer(toIntOrNull)
     .custom(isPluginTypeValid).withMessage('Should have a valid plugin type'),
   query('uninstalled')
     .optional()
@@ -165,6 +166,7 @@ const listAvailablePluginsValidator = [
     .exists().withMessage('Should have a valid search'),
   query('pluginType')
     .optional()
+    .customSanitizer(toIntOrNull)
     .custom(isPluginTypeValid).withMessage('Should have a valid plugin type'),
   query('currentPeerTubeEngine')
     .optional()
diff --git a/server/middlewares/validators/videos/video-blacklist.ts b/server/middlewares/validators/videos/video-blacklist.ts
index 4bd6a8333..808fefc25 100644
--- a/server/middlewares/validators/videos/video-blacklist.ts
+++ b/server/middlewares/validators/videos/video-blacklist.ts
@@ -1,10 +1,10 @@
 import * as express from 'express'
 import { body, param, query } from 'express-validator'
-import { isBooleanValid, isIdOrUUIDValid, toBooleanOrNull } from '../../../helpers/custom-validators/misc'
-import { logger } from '../../../helpers/logger'
-import { areValidationErrors } from '../utils'
+import { isBooleanValid, isIdOrUUIDValid, toBooleanOrNull, toIntOrNull } from '../../../helpers/custom-validators/misc'
 import { isVideoBlacklistReasonValid, isVideoBlacklistTypeValid } from '../../../helpers/custom-validators/video-blacklist'
+import { logger } from '../../../helpers/logger'
 import { doesVideoBlacklistExist, doesVideoExist } from '../../../helpers/middlewares'
+import { areValidationErrors } from '../utils'
 
 const videosBlacklistRemoveValidator = [
   param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid videoId'),
@@ -67,7 +67,8 @@ const videosBlacklistUpdateValidator = [
 
 const videosBlacklistFiltersValidator = [
   query('type')
-    .optional()
+  .optional()
+    .customSanitizer(toIntOrNull)
     .custom(isVideoBlacklistTypeValid).withMessage('Should have a valid video blacklist type attribute'),
   query('search')
     .optional()
diff --git a/server/tests/api/check-params/abuses.ts b/server/tests/api/check-params/abuses.ts
index 1f040bbcf..8dadd9922 100644
--- a/server/tests/api/check-params/abuses.ts
+++ b/server/tests/api/check-params/abuses.ts
@@ -421,6 +421,10 @@ describe('Test abuses API validators', function () {
     it('Should fail when creating abuse message of a remote abuse', async function () {
       await addAbuseMessage(server.url, server.accessToken, remoteAbuseId, 'message', 400)
     })
+
+    after(async function () {
+      await cleanupTests([ anotherServer ])
+    })
   })
 
   after(async function () {