diff --git a/exercises/concept/amusement-park/amusement-park.js b/exercises/concept/amusement-park/amusement-park.js
index 93f397df61..e7d9cc19da 100644
--- a/exercises/concept/amusement-park/amusement-park.js
+++ b/exercises/concept/amusement-park/amusement-park.js
@@ -10,7 +10,7 @@
  * @returns {Visitor} the visitor that was created
  */
 export function createVisitor(name, age, ticketId) {
-  throw new Error('Please implement the createVisitor function.');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -20,7 +20,7 @@ export function createVisitor(name, age, ticketId) {
  * @returns {Visitor} the visitor without a ticket
  */
 export function revokeTicket(visitor) {
-  throw new Error('Please implement the revokeTicket function.');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -31,7 +31,7 @@ export function revokeTicket(visitor) {
  * @returns {string} ticket status
  */
 export function ticketStatus(tickets, ticketId) {
-  throw new Error('Please implement the ticketStatus function.');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -43,7 +43,7 @@ export function ticketStatus(tickets, ticketId) {
  * @returns {string} ticket status
  */
 export function simpleTicketStatus(tickets, ticketId) {
-  throw new Error('Please implement the simpleTicketStatus function.');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -53,5 +53,5 @@ export function simpleTicketStatus(tickets, ticketId) {
  * @returns {string | undefined} version
  */
 export function gtcVersion(visitor) {
-  throw new Error('Please implement the gtcVersion function.');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/bird-watcher/bird-watcher.js b/exercises/concept/bird-watcher/bird-watcher.js
index 476d3634f5..d94a707931 100644
--- a/exercises/concept/bird-watcher/bird-watcher.js
+++ b/exercises/concept/bird-watcher/bird-watcher.js
@@ -11,7 +11,7 @@
  * @returns {number} total bird count
  */
 export function totalBirdCount(birdsPerDay) {
-  throw new Error('Please implement the totalBirdCount function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -22,7 +22,7 @@ export function totalBirdCount(birdsPerDay) {
  * @returns {number} birds counted in the given week
  */
 export function birdsInWeek(birdsPerDay, week) {
-  throw new Error('Please implement the birdsInWeek function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -33,5 +33,5 @@ export function birdsInWeek(birdsPerDay, week) {
  * @returns {void} should not return anything
  */
 export function fixBirdCountLog(birdsPerDay) {
-  throw new Error('Please implement the fixBirdCountLog function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/coordinate-transformation/coordinate-transformation.js b/exercises/concept/coordinate-transformation/coordinate-transformation.js
index e32567ad1a..03fd4ff20b 100644
--- a/exercises/concept/coordinate-transformation/coordinate-transformation.js
+++ b/exercises/concept/coordinate-transformation/coordinate-transformation.js
@@ -15,7 +15,7 @@
  *  translated coordinate pair in the form [x, y]
  */
 export function translate2d(dx, dy) {
-  throw new Error('Implement the translate2d function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -29,7 +29,7 @@ export function translate2d(dx, dy) {
  *  scaled coordinate pair in the form [x, y]
  */
 export function scale2d(sx, sy) {
-  throw new Error('Implement the scale2d function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -43,7 +43,7 @@ export function scale2d(sx, sy) {
  *  transformed coordinate pair in the form [x, y]
  */
 export function composeTransform(f, g) {
-  throw new Error('Implement the composeTransform function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -56,5 +56,5 @@ export function composeTransform(f, g) {
  *  if the arguments are the same on subsequent calls, or compute a new result if they are different.
  */
 export function memoizeTransform(f) {
-  throw new Error('Implement the memoizeTransform function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/custom-signs/custom-signs.js b/exercises/concept/custom-signs/custom-signs.js
index d9f5dad561..a05dcc934f 100644
--- a/exercises/concept/custom-signs/custom-signs.js
+++ b/exercises/concept/custom-signs/custom-signs.js
@@ -14,7 +14,7 @@
  */
 
 export function buildSign(occasion, name) {
-  throw new Error('Implement the buildSign function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -26,7 +26,7 @@ export function buildSign(occasion, name) {
  */
 
 export function buildBirthdaySign(age) {
-  throw new Error('Implement the buildBirthdaySign function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -39,7 +39,7 @@ export function buildBirthdaySign(age) {
  */
 
 export function graduationFor(name, year) {
-  throw new Error('Implement the graduationFor function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -53,5 +53,5 @@ export function graduationFor(name, year) {
  */
 
 export function costOf(sign, currency) {
-  throw new Error('Implement the costOf function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/factory-sensors/factory-sensors.js b/exercises/concept/factory-sensors/factory-sensors.js
index cfc2b02d67..be71cfd434 100644
--- a/exercises/concept/factory-sensors/factory-sensors.js
+++ b/exercises/concept/factory-sensors/factory-sensors.js
@@ -16,7 +16,7 @@ export class OverheatingError extends Error {
  * @throws {Error}
  */
 export function checkHumidityLevel(humidityPercentage) {
-  throw new Error('Implement the checkHumidity function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -26,7 +26,7 @@ export function checkHumidityLevel(humidityPercentage) {
  * @throws {ArgumentError|OverheatingError}
  */
 export function reportOverheating(temperature) {
-  throw new Error('Implement the reportOverheating function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -41,5 +41,5 @@ export function reportOverheating(temperature) {
  * @throws {ArgumentError|OverheatingError|Error}
  */
 export function monitorTheMachine(actions) {
-  throw new Error('Implement the monitorTheMachine function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/high-score-board/high-score-board.js b/exercises/concept/high-score-board/high-score-board.js
index 1e365bd655..c652240b8f 100644
--- a/exercises/concept/high-score-board/high-score-board.js
+++ b/exercises/concept/high-score-board/high-score-board.js
@@ -7,7 +7,7 @@
  * @returns {Record<string, number>} new score board
  */
 export function createScoreBoard() {
-  throw new Error('Please implement the createScoreBoard function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -19,7 +19,7 @@ export function createScoreBoard() {
  * @returns {Record<string, number>} updated score board
  */
 export function addPlayer(scoreBoard, player, score) {
-  throw new Error('Please implement the addPlayer function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -30,7 +30,7 @@ export function addPlayer(scoreBoard, player, score) {
  * @returns {Record<string, number>} updated score board
  */
 export function removePlayer(scoreBoard, player) {
-  throw new Error('Please implement the removePlayer function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -42,7 +42,7 @@ export function removePlayer(scoreBoard, player) {
  * @returns {Record<string, number>} updated score board
  */
 export function updateScore(scoreBoard, player, points) {
-  throw new Error('Please implement the updateScore function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -52,5 +52,5 @@ export function updateScore(scoreBoard, player, points) {
  * @returns {Record<string, number>} updated score board
  */
 export function applyMondayBonus(scoreBoard) {
-  throw new Error('Please implement the applyMondayBonus function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/lucky-numbers/lucky-numbers.js b/exercises/concept/lucky-numbers/lucky-numbers.js
index 069705809a..3146f9154b 100644
--- a/exercises/concept/lucky-numbers/lucky-numbers.js
+++ b/exercises/concept/lucky-numbers/lucky-numbers.js
@@ -8,7 +8,7 @@
  * @returns {number} sum of the two arrays
  */
 export function twoSum(array1, array2) {
-  throw new Error('Implement the twoSum function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -18,7 +18,7 @@ export function twoSum(array1, array2) {
  * @returns {boolean} whether the number is a palindrome or not
  */
 export function luckyNumber(value) {
-  throw new Error('Implement the luckyNumber function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -29,5 +29,5 @@ export function luckyNumber(value) {
  * @returns {string} error message
  */
 export function errorMessage(input) {
-  throw new Error('Implement the errorMessage function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/mixed-juices/mixed-juices.js b/exercises/concept/mixed-juices/mixed-juices.js
index dde696fac8..d5f175fbe6 100644
--- a/exercises/concept/mixed-juices/mixed-juices.js
+++ b/exercises/concept/mixed-juices/mixed-juices.js
@@ -11,7 +11,7 @@
  * @returns {number} time in minutes
  */
 export function timeToMixJuice(name) {
-  throw new Error('Please implement the timeToMixJuice function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -23,7 +23,7 @@ export function timeToMixJuice(name) {
  * @returns {number} number of limes cut
  */
 export function limesToCut(wedgesNeeded, limes) {
-  throw new Error('Please implement the limesToCut function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -34,5 +34,5 @@ export function limesToCut(wedgesNeeded, limes) {
  * @returns {string[]} remaining orders after the time is up
  */
 export function remainingOrders(timeLeft, orders) {
-  throw new Error('Please implement the remainingOrders function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/nullability/nullability.js b/exercises/concept/nullability/nullability.js
index b8ead1ec6f..7638e2a5de 100644
--- a/exercises/concept/nullability/nullability.js
+++ b/exercises/concept/nullability/nullability.js
@@ -14,5 +14,5 @@
  * @returns {string} the text to print on the badge
  */
 export function printBadge(id, name, department) {
-  throw new Error('Please implement the printBadge function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/ozans-playlist/ozans-playlist.js b/exercises/concept/ozans-playlist/ozans-playlist.js
index 349cdd5f04..1b02443a3a 100644
--- a/exercises/concept/ozans-playlist/ozans-playlist.js
+++ b/exercises/concept/ozans-playlist/ozans-playlist.js
@@ -11,7 +11,7 @@
  * @returns {string[]} new playlist with unique entries
  */
 export function removeDuplicates(playlist) {
-  throw new Error('Please implement the removeDuplicates function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -22,7 +22,7 @@ export function removeDuplicates(playlist) {
  * @returns {boolean} whether the track is in the playlist
  */
 export function hasTrack(playlist, track) {
-  throw new Error('Please implement the hasTrack function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -33,7 +33,7 @@ export function hasTrack(playlist, track) {
  * @returns {string[]} new playlist
  */
 export function addTrack(playlist, track) {
-  throw new Error('Please implement the addTrack function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -44,7 +44,7 @@ export function addTrack(playlist, track) {
  * @returns {string[]} new playlist
  */
 export function deleteTrack(playlist, track) {
-  throw new Error('Please implement the deleteTrack function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -54,5 +54,5 @@ export function deleteTrack(playlist, track) {
  * @returns {string[]} list of artists
  */
 export function listArtists(playlist) {
-  throw new Error('Please implement the listArtists function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/pizza-order/pizza-order.js b/exercises/concept/pizza-order/pizza-order.js
index 4f0ec737f9..2bbb25f2f3 100644
--- a/exercises/concept/pizza-order/pizza-order.js
+++ b/exercises/concept/pizza-order/pizza-order.js
@@ -11,7 +11,7 @@
  * @returns {number} the price of the pizza
  */
 export function pizzaPrice(pizza, ...extras) {
-  throw new Error('Please implement the pizzaPrice function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -24,5 +24,5 @@ export function pizzaPrice(pizza, ...extras) {
  * @returns {number} the price of the total order
  */
 export function orderPrice(pizzaOrders) {
-  throw new Error('Please implement the orderPrice function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/regular-chatbot/regular-chatbot.js b/exercises/concept/regular-chatbot/regular-chatbot.js
index fd141786b1..9bfe2d554e 100644
--- a/exercises/concept/regular-chatbot/regular-chatbot.js
+++ b/exercises/concept/regular-chatbot/regular-chatbot.js
@@ -8,7 +8,7 @@
  */
 
 export function isValidCommand(command) {
-  throw new Error('Please implement the isValidCommand function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -18,7 +18,7 @@ export function isValidCommand(command) {
  * @returns {string} The message without the emojis encryption
  */
 export function removeEmoji(message) {
-  throw new Error('Please implement the removeEmoji function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -28,7 +28,7 @@ export function removeEmoji(message) {
  * @returns {string} the Chatbot response to the phone Validation
  */
 export function checkPhoneNumber(number) {
-  throw new Error('Please implement the checkPhoneNumber function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -38,7 +38,7 @@ export function checkPhoneNumber(number) {
  * @returns {string[] | null} all the possible URL's that the user may have answered
  */
 export function getURL(userInput) {
-  throw new Error('Please implement the userInput function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -48,5 +48,5 @@ export function getURL(userInput) {
  * @returns {string} Greeting from the chatbot
  */
 export function niceToMeetYou(fullName) {
-  throw new Error('Please implement the fullName function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/train-driver/train-driver.js b/exercises/concept/train-driver/train-driver.js
index e44f07b03f..b33bc4309f 100644
--- a/exercises/concept/train-driver/train-driver.js
+++ b/exercises/concept/train-driver/train-driver.js
@@ -11,7 +11,7 @@
  * @returns {number[]} wagon ids
  */
 export function getListOfWagons(a, b, c, d, e, f, g, h, i, j, k, l, m, n) {
-  throw new Error('Please implement the getListOfWagons function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -21,7 +21,7 @@ export function getListOfWagons(a, b, c, d, e, f, g, h, i, j, k, l, m, n) {
  * @returns {number[]} reordered list of wagons
  */
 export function fixListOfWagons(ids) {
-  throw new Error('Please implement the fixListOfWagons function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -32,7 +32,7 @@ export function fixListOfWagons(ids) {
  * @returns {number[]} corrected list of wagons
  */
 export function correctListOfWagons(ids, missingWagons) {
-  throw new Error('Please implement the correctListOfWagons function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -43,7 +43,7 @@ export function correctListOfWagons(ids, missingWagons) {
  * @returns {Record<string, string>} extended route information
  */
 export function extendRouteInformation(information, additional) {
-  throw new Error('Please implement the extendRouteInformation function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -53,5 +53,5 @@ export function extendRouteInformation(information, additional) {
  * @returns {[string, Record<string, string>]} array with arrival time and object without arrival time
  */
 export function separateTimeOfArrival(information) {
-  throw new Error('Please implement the separateTimeOfArrival function');
+  throw new Error('Remove this line and implement the function');
 }
diff --git a/exercises/concept/vehicle-purchase/vehicle-purchase.js b/exercises/concept/vehicle-purchase/vehicle-purchase.js
index d635d2c7ce..aa414d4d38 100644
--- a/exercises/concept/vehicle-purchase/vehicle-purchase.js
+++ b/exercises/concept/vehicle-purchase/vehicle-purchase.js
@@ -11,7 +11,7 @@
  * @returns {boolean} whether a license is required
  */
 export function needsLicense(kind) {
-  throw new Error('Please implement the needsLicense function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -23,7 +23,7 @@ export function needsLicense(kind) {
  * @returns {string} a sentence of advice which option to choose
  */
 export function chooseVehicle(option1, option2) {
-  throw new Error('Please implement the chooseVehicle function');
+  throw new Error('Remove this line and implement the function');
 }
 
 /**
@@ -35,5 +35,5 @@ export function chooseVehicle(option1, option2) {
  * @returns {number} expected resell price in the dealership
  */
 export function calculateResellPrice(originalPrice, age) {
-  throw new Error('Please implement the calculateResellPrice function');
+  throw new Error('Remove this line and implement the function');
 }