Widget error

My widget is giving error – when i click appearance then widgets – instead of displaying menu its displaying codes

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

label class="setting size">
								<span>Size</span>
								<select class="size" name="size"
									data-setting="size"
									<# if ( data.userSettings ) { #>
										data-user-setting="imgsize"
									<# } #>>
																			<#
										var size = data.sizes['thumbnail'];
										if ( size ) { #>
											<option value="thumbnail">
												Thumbnail – {{ size.width }} × {{ size.height }}
											</option>
										<# } #>
																			<#
										var size = data.sizes['medium'];
										if ( size ) { #>
											<option value="medium">
												Medium – {{ size.width }} × {{ size.height }}
											</option>
										<# } #>
																			<#
										var size = data.sizes['large'];
										if ( size ) { #>
											<option value="large">
												Large – {{ size.width }} × {{ size.height }}
											</option>
										<# } #>
																			<#
										var size = data.sizes['full'];
										if ( size ) { #>
											<option value="full">
												Full Size – {{ size.width }} × {{ size.height }}

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-----> like this