アプリで実行するrake db:seedと、Rails次のエラーが発生します。
US-ASCIIの無効なバイトシーケンス（引数エラー）
science_majorsシードファイルに追加してダウンしたところ、実行するrake db:seedと次のエラーが発生します。
無効なバイトシーケンスエラー
これはなぜですか、どうすれば修正できますか？
seeds.rbの一部
@college = College.find_or_create_by_name!('University of Pittsburgh')
if @college.update_attributes(
url: 'university-of-pittsburgh',
public: 'Public',
years: '4-year',
category: 'National University',
calendar: 'Semester',
location: 'Pittsburgh, PA',
setting: 'Large City (250-500k)',
retention: '90',
majors: 'business/marketing: 15%|social sciences: 14%|health professions: 11%|english: 10%|engineering: 9%|psychology: 8%|biology: 7%|history: 5%',
scholarships_link: 'http://www.oafa.pitt.edu/universityschlrs.aspx',
map: '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=university+of+pittsburgh&aq=&sll=40.444261,-79.970448&sspn=0.142165,0.251656&ie=UTF8&hq=university+of+pittsburgh&t=m&ll=40.443486,-79.958245&spn=0.010798,0.021038&output=embed"></iframe><br /><small><a href="https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=university+of+pittsburgh&aq=&sll=40.431368,-79.9805&sspn=0.142165,0.251656&ie=UTF8&hq=university+of+pittsburgh&t=m&ll=40.443486,-79.958245&spn=0.010798,0.021038" style="color:#0000FF;text-align:left">View Larger Map</a></small>',
street_view: '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=University+of+Pittsburgh,+4200+Fifth+Ave,+Pittsburgh,+PA&aq=0&oq=uni&sll=40.444261,-79.970448&sspn=0.142165,0.251656&ie=UTF8&hq=University+of+Pittsburgh,+4200+Fifth+Ave,+Pittsburgh,+PA&ll=40.443486,-79.958245&spn=0.010798,0.021038&t=m&layer=c&cbll=40.441775,-79.956671&panoid=BgWQKMiSI1fpwP7JUF16Vg&cbp=12,45.25,,0,-3.34&output=svembed"></iframe><br /><small><a href="https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=University+of+Pittsburgh,+4200+Fifth+Ave,+Pittsburgh,+PA&aq=0&oq=uni&sll=40.431368,-79.9805&sspn=0.142165,0.251656&ie=UTF8&hq=University+of+Pittsburgh,+4200+Fifth+Ave,+Pittsburgh,+PA&ll=40.443486,-79.958245&spn=0.010798,0.021038&t=m&layer=c&cbll=40.441775,-79.956671&panoid=BgWQKMiSI1fpwP7JUF16Vg&cbp=12,45.25,,0,-3.34" style="color:#0000FF;text-align:left">View Larger Map</a></small>',
housing: '<iframe src="http://www.tour.pitt.edu/tour-categories/residence-halls" scrolling="no" height="820" width="900"></iframe>',
food: '<div style="overflow: hidden; max-width: 1000px;"><iframe scrolling="no" src="http://www.pc.pitt.edu/dining/menus.php" style="margin-left: 0; height: 2000px; margin-top: -370px; margin-bottom: -375px; width: 750px;"></iframe></div>',
weather: '<div style="overflow: hidden; max-width: 500px;"><iframe scrolling="no" src="http://www.weather.com/weather/wxclimatology/monthly/graph/USPA1290" style="margin-left: -40px; height: 1570px; margin-top: -490px; width: 500px;"></iframe></div>',
dorms: 'Towers (fr.)|Sutherland (fr.)|Lothrop (fr.)|Nordenberg (fr.)|Holland (fr.)|Forbes (fr.; honors)|McCormick|Brackenridge|Amos|Bruce|Panther|Pennsylvania|Ruskin|Bouquet Gardens|Oakwood Apartments|Centre-Plaza Apartments|Forbes-Craig Apartments (honors)',
science_majors: 'Actuarial Mathematics|Applied Mathematics|Bioinformatics|Biological Sciences|Chemistry*|Computer Science|Ecology and Evolution|Environmental Geology|Environmental Studies|Geology|History and Philosophy of Science|Linguistics*|Mathematics*|Mathematics-Economics|Mathematics-Philosophy|Microbiology|Molecular Biology|Natural Sciences Area|Neuroscience*|Physics*|Physics and Astronomy|Scientific Computing|Statistics',
social_science_majors: 'Economics*|Economics–Statistics|History*|Political Science*|Politics-Philosophy|Psychology|Sociology*|Urban Studies',
humanities_majors: 'Africana Studies*|Africana Studies–English|Anthropology|Chinese*|Classics*|English Literature*|English Writing|Film Studies*|French*|German|History of Art & Architecture|Humanities Area|Italian*|Italian Studies|Japanese*|Liberal Studies|Music*|Philosophy*|Religious Studies*|Russian|Slavic Studies|Spanish|Studio Arts*|Theatre Arts*',
business_majors: 'Accounting|Finance|General Management|Global Management|Marketing',
engineering_majors: 'Bioengineering*|Chemical Engineering*|Civil Engineering*|Computer Engineering|Electrical Engineering*|Engineering Physics|Industrial Engineering*|Materials Science and Engineering*|Mechanical Engineering*',
professional_majors: 'Administration of Justice*|Applied Developmental Psychology|Architectural Studies|Athletic Training|Clinical Dietetics and Nutrition|Communication: Rhet & Comm|Communication Science|Dental Hygiene|Emergency Medicine|Health Information Management|Health Services|Health and Physical Activity|Information Science|Legal Studies*|Media and Professional Communications|Nursing|Pharmacy|Public Service*|Rehabilitation Science|Social Work*'
)
else
# handle validation errors
end
@college= College.find_or_create_by_name!('Harvard')
if @college.update_attributes(
url: 'harvard',
public: 'Private',
years: '4-year',
category: 'National University',
calendar: 'Semester',
location: 'Cambridge, MA',
setting: 'Small City (50-250k)',
degrees: 'Bachelors, Masters, Doctoral',
rotc: 'Air Force, Army, Navy',
considered: 'Academic GPA|Alumni Relation|Application Essay|Character/Personal Qualities|Extracurricular Activities|First Generation College Student|Geographical Residence|Interview|Racial/Ethnic Status|Recommendations|Rigor of secondary school record|Standardized Test Scores|Talent/Ability|Volunteer Work|Work Experience',
student_faculty: '7 to 1')
else
# handle validation errors
end
私は他のすべての大学を除外しました。私はこれまでに200の学校を持っていますが、これまでのところ包括的なデータを持っているのはピットだけです。残りはハーバードのような基本的なデータだけです。また、簡潔にするためにPittのデータの一部を省略しましたが、残りを含めてほしい場合はお知らせください。
編集：私は*'を下に取り出してscience_majors実行しようとしましたrake db:seedが、それは何も変わりませんでした。
#encoding utf-8、他の投稿者が注意深く指摘しているように、ファイルの先頭に追加して、ファイルが適切にエンコードされていることを確認する必要があります。