CORS problem.
Hit F12 and go to console.
Hit your button.
Here it is
bootPreview.js:92 Registered service worker on preview.construct.net
sw.js:562 [SW-Preview] Up to date
runtime.js:21 [C3 runtime] Hosted in DOM, rendering with WebGL 2 [ANGLE (Google, Vulkan 1.2.0 (SwiftShader Device (Subzero) (0x0000C0DE)), SwiftShader driver)] (standard compositing)
local.html:1 Access to XMLHttpRequest at 'https://pastebin.com/raw/BwFuiN0G' from origin 'https://preview.construct.net' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
instance.js:3 [Construct 3] AJAX request to 'https://pastebin.com/raw/BwFuiN0G' (tag 'event') failed: ProgressEvent {isTrusted: true, lengthComputable: false, loaded: 0, total: 0, type: 'error', …}isTrusted: truebubbles: falsecancelBubble: falsecancelable: falsecomposed: falsecurrentTarget: XMLHttpRequest {readyState: 4, timeout: 0, withCredentials: false, upload: XMLHttpRequestUpload, onreadystatechange: ƒ, …}defaultPrevented: falseeventPhase: 0lengthComputable: falseloaded: 0path: []returnValue: truesrcElement: XMLHttpRequest {readyState: 4, timeout: 0, withCredentials: false, upload: XMLHttpRequestUpload, onreadystatechange: ƒ, …}target: XMLHttpRequest {readyState: 4, timeout: 0, withCredentials: false, upload: XMLHttpRequestUpload, onreadystatechange: ƒ, …}timeStamp: 8868total: 0type: "error"[[Prototype]]: ProgressEvent
_TriggerError instance.js:3
_OnError instance.js:4
errorFunc instance.js:6
error (async)
(anonymous) instance.js:7
_DoRequest instance.js:6
Request actions.js:2
_RunActions_ReturnValue eventBlock.js:27
_RunAndBlock eventBlock.js:24
Run eventBlock.js:21
_ExecuteTrigger eventSheet.js:19
_TriggerForClass eventSheet.js:13
_Trigger eventSheet.js:12
_Trigger eventSheetManager.js:13
Trigger runtime.js:89
TriggerAsync runtime.js:90
TriggerAsync sdkInstanceBase.js:4
_OnClick instance.js:3
(anonymous) plugin.js:1
(anonymous) sdkDOMPluginBase.js:3
_OnEventFromDOM runtime.js:16
_OnMessageFromDOM runtime.js:14
_PostToRuntimeMaybeSync domHandler.js:2
_PostToRuntimeElementMaybeSync domElementHandler.js:4
(anonymous) domSide.js:3
instance.js:9 GET pastebin.com/raw/BwFuiN0G net::ERR_FAILED 200
(anonymous) instance.js:9
_DoRequest instance.js:6
Request actions.js:2
_RunActions_ReturnValue eventBlock.js:27
_RunAndBlock eventBlock.js:24
Run eventBlock.js:21
_ExecuteTrigger eventSheet.js:19
_TriggerForClass eventSheet.js:13
_Trigger eventSheet.js:12
_Trigger eventSheetManager.js:13
Trigger runtime.js:89
TriggerAsync runtime.js:90
TriggerAsync sdkInstanceBase.js:4
_OnClick instance.js:3
(anonymous) plugin.js:1
(anonymous) sdkDOMPluginBase.js:3
_OnEventFromDOM runtime.js:16
_OnMessageFromDOM runtime.js:14
_PostToRuntimeMaybeSync domHandler.js:2
_PostToRuntimeElementMaybeSync domElementHandler.js:4
(anonymous) domSide.js:3