diff --git a/commons/ui/build.gradle.kts b/commons/ui/build.gradle.kts
index 8f4e4b2..6e59a7f 100644
--- a/commons/ui/build.gradle.kts
+++ b/commons/ui/build.gradle.kts
@@ -10,4 +10,4 @@ android {
 
 dependencies {
     implementation(project(BuildModules.CORE))
-}
\ No newline at end of file
+}
diff --git a/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonCard.kt b/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonCard.kt
index a7a4957..49e2d23 100644
--- a/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonCard.kt
+++ b/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonCard.kt
@@ -43,9 +43,13 @@ fun LessonCard(
             modifier = Modifier.fillMaxSize()
         ) {
             Image(
-                modifier = Modifier.fillMaxHeight(),
-                contentScale = ContentScale.FillHeight,
-                painter = rememberImagePainter(lesson.thumbnail.url),
+                modifier = Modifier
+                    .aspectRatio(1f)
+                    .fillMaxHeight(),
+                contentScale = ContentScale.Crop,
+                painter = rememberImagePainter(lesson.thumbnail.url) {
+                    error(R.drawable.art1)
+                },
                 contentDescription = lesson.title
             )
 
diff --git a/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonThemeCard.kt b/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonThemeCard.kt
index 3ba8ba5..bcc1e98 100644
--- a/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonThemeCard.kt
+++ b/commons/ui/src/main/kotlin/com/teacherworkout/commons/ui/composables/LessonThemeCard.kt
@@ -3,10 +3,7 @@ package com.teacherworkout.commons.ui.composables
 import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxHeight
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.Card
 import androidx.compose.material.MaterialTheme
@@ -39,9 +36,13 @@ fun LessonThemeCard(
             modifier = Modifier.fillMaxSize()
         ){
             Image(
-                modifier = Modifier.fillMaxHeight(),
-                contentScale = ContentScale.FillHeight,
-                painter = rememberImagePainter(lessonTheme.thumbnail.url),
+                modifier = Modifier
+                    .aspectRatio(1f)
+                    .fillMaxHeight(),
+                contentScale = ContentScale.Crop,
+                painter = rememberImagePainter(lessonTheme.thumbnail.url) {
+                    error(R.drawable.art1)
+                },
                 contentDescription = lessonTheme.thumbnail.description
             )
             Row(
diff --git a/core/src/main/kotlin/com/teacherworkout/core/data/ErrorEntity.kt b/core/src/main/kotlin/com/teacherworkout/core/data/ErrorEntity.kt
index c7df3f2..31b5d95 100644
--- a/core/src/main/kotlin/com/teacherworkout/core/data/ErrorEntity.kt
+++ b/core/src/main/kotlin/com/teacherworkout/core/data/ErrorEntity.kt
@@ -5,4 +5,4 @@ sealed class ErrorEntity(val message: String?) {
         object ServerError: ApiError("Server error")
         object NotFound: ApiError("Not found")
     }
-}
\ No newline at end of file
+}
diff --git a/core/src/main/kotlin/com/teacherworkout/core/data/repositories/impl/ApolloLessonsRepository.kt b/core/src/main/kotlin/com/teacherworkout/core/data/repositories/impl/ApolloLessonsRepository.kt
index 39de2dd..c665ee0 100644
--- a/core/src/main/kotlin/com/teacherworkout/core/data/repositories/impl/ApolloLessonsRepository.kt
+++ b/core/src/main/kotlin/com/teacherworkout/core/data/repositories/impl/ApolloLessonsRepository.kt
@@ -63,4 +63,4 @@ class ApolloLessonsRepository(private val apolloClient: ApolloClient): LessonsRe
         executeQuery(LessonEntityQuery(id)) {
             it.lessonStatuses!!.single().lesson
         }
-}
\ No newline at end of file
+}
diff --git a/core/src/main/kotlin/com/teacherworkout/core/di/NetworkModule.kt b/core/src/main/kotlin/com/teacherworkout/core/di/NetworkModule.kt
index 22580da..51be1f3 100644
--- a/core/src/main/kotlin/com/teacherworkout/core/di/NetworkModule.kt
+++ b/core/src/main/kotlin/com/teacherworkout/core/di/NetworkModule.kt
@@ -14,4 +14,4 @@ val networkModule = module {
     single<LessonsRepository>{
         ApolloLessonsRepository(get())
     }
-}
\ No newline at end of file
+}