Handling Errors & Warnings in R | List of Typical Messages & How to Solve

List of Typical Errors & Warnings in R (+ Examples)

• [ reached getOption(“max.print”) — omitted X entries ]
• Error: ‘\U’ used without hex digits in character string starting “”C:\U”
• Error: `data` must be a data frame, or other object coercible by `fortify()`, not an S3 object with class uneval
• Error: (list) object cannot be coerced to type ‘double’
• Error: ‘R’ is an unrecognized escape in character string starting “”C:R”
• Error: Aesthetics must be either length 1 or the same as the data
• Error: attempt to apply non-function
• Error: cannot allocate vector of size X Gb
• Error: Continuous value supplied to discrete scale
• Error: Discrete value supplied to continuous scale
• Error: JAVA_HOME cannot be determined from the Registry
• Error: object X not found
• Error: stat_count() must not be used with a y aesthetic.
• Error: unexpected ‘,’ in “,”
• Error: unexpected ‘}’ in X
• Error: unexpected ‘=’ in “=”
• Error: unexpected ‘)’ in “)”
• Error: unexpected ‘else’ in “else”
• Error: unexpected input in X
• Error: unexpected numeric constant in X
• Error: unexpected SPECIAL in X
• Error: unexpected string constant in X
• Error: unexpected symbol in X
• Error in .Call.graphics : invalid graphics state
• Error in apply(data) : dim(X) must have a positive length
• Error in as.Date.numeric(X) : ‘origin’ must be supplied
• Error in as.POSIXlt.character(x, tz, …) : character string is not in a standard unambiguous format
• Error in contrasts : contrasts can be applied only to factors with 2 or more levels
• Error in eval(predvars, data, env) : numeric ‘envir’ arg not of length one
• Error in file(file, “rt”) : cannot open the connection
• Error in file(file, “rt”) : invalid ‘description’ argument
• Error in fix.by(by.y, y) : ‘by’ must specify a uniquely valid column
• Error in hist.default(X) : ‘x’ must be numeric
• Error in if (NA) { : missing value where TRUE/FALSE needed
• Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, …) : NA/NaN/Inf in ‘x’
• Error in load(“X.rds”) : bad restore file magic number (file may be corrupted) — no data loaded
• Error in model.frame.default(Terms, newdata, na.action = na.action, xlev = object$xlevels) : ‘data’ must be a data.frame, environment, or list
• Error in names(X) : ‘names’ attribute must be the same length as the vector
• Error in plot.new() : figure margins too large
• Error in plot.window(…) : need finite ‘xlim’ values
• Error in plot.xy(xy.coords(x, y), type = type, …) : plot.new has not been called yet
• Error in read.table : more columns than column names
• Error in read.table(file = file, header = header, sep = sep, quote = quote, : duplicate ‘row.names’ are not allowed
• Error in scan : line 1 did not have X elements
• Error in setwd(X) : cannot change working directory
• Error in solve.default(X) : Lapack routine dgesv: system is exactly singular
• Error in stripchart.default(x1, …) : invalid plotting method
• Error in strsplit(X) : non-character argument
• Error in X : $ operator is invalid for atomic vectors
• Error in X : argument is of length zero
• Error in X : arguments imply differing number of rows
• Error in X : could not find function X
• Error in X : incorrect number of dimensions
• Error in X : incorrect number of subscripts on matrix
• Error in X : non-numeric argument to binary operator
• Error in X : object of type ‘closure’ is not subsettable
• Error in X : replacement has Y rows, data has Z
• Error in X : requires numeric/complex matrix/vector arguments
• Error in X : subscript out of bounds
• Error in X : undefined columns selected
• Error in X : unused argument
• Error in X %*% Y : non-conformable arguments
• Error in xy.coords(x, y, xlabel, ylabel, log) : ‘x’ and ‘y’ lengths differ
• geom_path: Each group consists of only one observation. Do you need to adjust the group aesthetic?
• Please select a CRAN mirror for use in this session
• The following objects are masked from ‘package:X’
• The following objects are masked from X
• Warning: cannot remove prior installation of package ‘X’
• Warning message: ‘newdata’ had X rows but variables found have Y rows
• Warning message: In mean.default(X) : argument is not numeric or logical: returning NA
• Warning message: In scan(file = file, what = what, sep = sep, quote = quote, dec = dec, : embedded nul(s) found in input
• Warning message: invalid factor level, NA generated
• Warning message: longer object length is not a multiple of shorter object length
• Warning message: NAs introduced by coercion
• Warning message: Removed X rows containing missing values
• Warning message: the condition has length > 1 and only the first element will be used
• Warning message in Ops.factor : not meaningful for factors
• Warning message in read.table: incomplete final line found by readTableHeader
• Warning messages in glm.fit: algorithm did not converge & fitted probabilities numerically 0 or 1 occurred

Note that there are usually different reasons why an error or warning message can occur. Please let me know in the comments in case the provided tutorials on this page didn’t solve your problem.

Furthermore, please let me know in the comments in case the error or warning message you have problems with is not included in the previous list.

I’m looking forward to hearing from you in the comments!