I solve this problem by removing space gape as:
Old Code:
@font-face {
font-family: 'ThemeIcons';
src:url('../../../fonts/themeicons/ThemeIcons.eot?387osh');
src:url('../../../fonts/themeicons/ThemeIcons.eot?#iefix387osh') format('embedded-opentype'),
url('../../../fonts/themeicons/ThemeIcons.woff?387osh') format('woff'),
url('../../../fonts/themeicons/ThemeIcons.ttf?387osh') format('truetype'),
url('../../../fonts/themeicons/ThemeIcons.svg?387osh#ThemeIcons') format('svg');
font-weight: normal;
font-style: normal;
}
New Code Just Remove Space before ,url(..):
@font-face {
font-family:'ThemeIcons';
src:url('../../../fonts/themeicons/ThemeIcons.eot?387osh');
src:url('../../../fonts/themeicons/ThemeIcons.eot?#iefix387osh') format('embedded-opentype'),url('../../../fonts/themeicons/ThemeIcons.woff?387osh') format('woff'),url('../../../fonts/themeicons/ThemeIcons.ttf?387osh') format('truetype'),url('../../../fonts/themeicons/ThemeIcons.svg?387osh#ThemeIcons') format('svg');
font-weight:normal;
font-style:normal;
}