GL ERROR :GL_INVALID_OPERATION when saving pdfs

Hello,

I get the following error when I try to save some plots in Atom. It doesn't break the code/throw a julia error, and I can't find anything wrong with the output. The errors seem to be somewhat random. Does anybody have an idea about what could be the issue? Could this be an Atom issue?

```
[34020:0717/121534.659984:ERROR:gles2_cmd_decoder.cc(17766)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glBindTexImage2DCHROMIUM: no image found with the given ID
[34020:0717/121534.660051:ERROR:texture_manager.cc(2728)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glTexSubImage2D: level 0 does not exist
[34020:0717/121534.660144:ERROR:gles2_cmd_decoder.cc(17766)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glBindTexImage2DCHROMIUM: no image found with the given ID
[34020:0717/121534.660181:ERROR:texture_manager.cc(2728)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glTexSubImage2D: level 0 does not exist
[34020:0717/121534.660312:ERROR:gles2_cmd_decoder.cc(12034)] [.DisplayCompositor-0x7f907d83d200]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[34020:0717/121534.660347:ERROR:gles2_cmd_decoder.cc(12034)] [.DisplayCompositor-0x7f907d83d200]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[34020:0717/121534.669332:ERROR:gles2_cmd_decoder.cc(17766)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glBindTexImage2DCHROMIUM: no image found with the given ID
[34020:0717/121534.669450:ERROR:gles2_cmd_decoder.cc(17766)] [.RenderCompositor-0x7ff75903f800]GL ERROR :GL_INVALID_OPERATION : glBindTexImage2DCHROMIUM: no image found with the given ID

```

```
Status `~/.julia/environments/v1.0/Project.toml`
[c52e3926] Atom v0.8.8
[fbb218c0] BSON v0.2.3
[ad839575] Blink v0.10.1
[4f18b42c] BusinessDays v0.9.4
[336ed68f] CSV v0.5.8
[159f3aea] Cairo v0.6.0
[0fe7c1db] DataArrays v0.7.0
[a93c6f00] DataFrames v0.18.4
[39dd38d3] Dierckx v0.4.1
[31c24e10] Distributions v0.19.2
[89b67f3b] ExcelFiles v1.0.0
[5789e2e9] FileIO v1.0.7
[38e38edf] GLM v1.3.0
[c91e804a] Gadfly v1.0.1
[4c0ca9eb] Gtk v0.17.0
[d9be37ee] Homebrew v0.7.1
[7073ff75] IJulia v1.18.1
[43edad99] InstantiateFromURL v0.3.0
[b6b21f68] Ipopt v0.5.4
[4138dd39] JLD v0.9.1
[033835bb] JLD2 v0.1.2
[682c06a0] JSON v0.20.0
[4076af6c] JuMP v0.19.2
[e5e0dc1b] Juno v0.7.0
[857edff2] KernelEstimator v0.3.3
[23fbe1c1] Latexify v0.8.2
[47be7bcc] ORCA v0.2.1
[429524aa] Optim v0.19.0
[d96e819e] Parameters v0.10.3
[f0f68f2c] PlotlyJS v0.12.5
[438e738f] PyCall v1.91.2
[d330b81b] PyPlot v2.8.1
[bd369af6] Tables v0.2.6 ⚲
[0f1e0344] WebIO v0.8.6
[fdbf4ff8] XLSX v0.5.3
[ade2ca70] Dates
[8bb1440f] DelimitedFiles
[56ddb016] Logging
[10745b16] Statistics
```

```
Julia Version 1.0.3
Commit 099e826241 (2018-12-18 01:34 UTC)
Platform Info:
OS: macOS (x86_64-apple-darwin14.5.0)
CPU: Intel(R) Core(TM) i5-4258U CPU @ 2.40GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-6.0.0 (ORCJIT, haswell)
Environment:
JULIA_EDITOR = atom -a
JULIA_NUM_THREADS = 2
```